Dylan  Iqbal

Dylan Iqbal

1619361780

Watching the Watchers - How Surveillance Companies Track You Using Mobile Networks

Every day, surveillance companies attack mobile networks, attempting to track the location of mobile phone users. We will analyze, using real-life data, these surveillance companies’ tactics and show the different ways that users are tracked in the wild over 2G, 3G and 4G networks. For 5G, we describe the critical functions and information elements in the core network that might be targeted by these attackers.

Mobile core signaling networks have been known to have exploitable vulnerabilities for several years. However very little information has been presented on whether these vulnerabilities are being exploited in real-life or not, and if so, how it is being done. This presentation will give first-hand information about how location tracking – the most common form of mobile signaling attack - is being done over multiple types of mobile networks in the wild today.

We will start with briefly introducing mobile telecom networks, their known security flaws and how surveillance companies exploit these flaws. Surveillance companies are success oriented and have a toolbox which they use for location tracking of mobile phone users, which is the most common attack. Based on real-life experiences we will describe what “tools” we see in the wild and how they work. We will also describe how attackers optimize attacks based on the target network and technology, and how attacks have changed over time since some mobile operators have begun to put in place protections. We will also show a visualization of how these attacks can happen. Finally, we will make a projection for 5G core networks, and how they will also be targeted by surveillance companies as they are deployed globally over the next few years.

#security #developer

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Watching the Watchers - How Surveillance Companies Track You Using Mobile Networks
Chloe  Butler

Chloe Butler

1667425440

Pdf2gerb: Perl Script Converts PDF Files to Gerber format

pdf2gerb

Perl script converts PDF files to Gerber format

Pdf2Gerb generates Gerber 274X photoplotting and Excellon drill files from PDFs of a PCB. Up to three PDFs are used: the top copper layer, the bottom copper layer (for 2-sided PCBs), and an optional silk screen layer. The PDFs can be created directly from any PDF drawing software, or a PDF print driver can be used to capture the Print output if the drawing software does not directly support output to PDF.

The general workflow is as follows:

  1. Design the PCB using your favorite CAD or drawing software.
  2. Print the top and bottom copper and top silk screen layers to a PDF file.
  3. Run Pdf2Gerb on the PDFs to create Gerber and Excellon files.
  4. Use a Gerber viewer to double-check the output against the original PCB design.
  5. Make adjustments as needed.
  6. Submit the files to a PCB manufacturer.

Please note that Pdf2Gerb does NOT perform DRC (Design Rule Checks), as these will vary according to individual PCB manufacturer conventions and capabilities. Also note that Pdf2Gerb is not perfect, so the output files must always be checked before submitting them. As of version 1.6, Pdf2Gerb supports most PCB elements, such as round and square pads, round holes, traces, SMD pads, ground planes, no-fill areas, and panelization. However, because it interprets the graphical output of a Print function, there are limitations in what it can recognize (or there may be bugs).

See docs/Pdf2Gerb.pdf for install/setup, config, usage, and other info.


pdf2gerb_cfg.pm

#Pdf2Gerb config settings:
#Put this file in same folder/directory as pdf2gerb.pl itself (global settings),
#or copy to another folder/directory with PDFs if you want PCB-specific settings.
#There is only one user of this file, so we don't need a custom package or namespace.
#NOTE: all constants defined in here will be added to main namespace.
#package pdf2gerb_cfg;

use strict; #trap undef vars (easier debug)
use warnings; #other useful info (easier debug)


##############################################################################################
#configurable settings:
#change values here instead of in main pfg2gerb.pl file

use constant WANT_COLORS => ($^O !~ m/Win/); #ANSI colors no worky on Windows? this must be set < first DebugPrint() call

#just a little warning; set realistic expectations:
#DebugPrint("${\(CYAN)}Pdf2Gerb.pl ${\(VERSION)}, $^O O/S\n${\(YELLOW)}${\(BOLD)}${\(ITALIC)}This is EXPERIMENTAL software.  \nGerber files MAY CONTAIN ERRORS.  Please CHECK them before fabrication!${\(RESET)}", 0); #if WANT_DEBUG

use constant METRIC => FALSE; #set to TRUE for metric units (only affect final numbers in output files, not internal arithmetic)
use constant APERTURE_LIMIT => 0; #34; #max #apertures to use; generate warnings if too many apertures are used (0 to not check)
use constant DRILL_FMT => '2.4'; #'2.3'; #'2.4' is the default for PCB fab; change to '2.3' for CNC

use constant WANT_DEBUG => 0; #10; #level of debug wanted; higher == more, lower == less, 0 == none
use constant GERBER_DEBUG => 0; #level of debug to include in Gerber file; DON'T USE FOR FABRICATION
use constant WANT_STREAMS => FALSE; #TRUE; #save decompressed streams to files (for debug)
use constant WANT_ALLINPUT => FALSE; #TRUE; #save entire input stream (for debug ONLY)

#DebugPrint(sprintf("${\(CYAN)}DEBUG: stdout %d, gerber %d, want streams? %d, all input? %d, O/S: $^O, Perl: $]${\(RESET)}\n", WANT_DEBUG, GERBER_DEBUG, WANT_STREAMS, WANT_ALLINPUT), 1);
#DebugPrint(sprintf("max int = %d, min int = %d\n", MAXINT, MININT), 1); 

#define standard trace and pad sizes to reduce scaling or PDF rendering errors:
#This avoids weird aperture settings and replaces them with more standardized values.
#(I'm not sure how photoplotters handle strange sizes).
#Fewer choices here gives more accurate mapping in the final Gerber files.
#units are in inches
use constant TOOL_SIZES => #add more as desired
(
#round or square pads (> 0) and drills (< 0):
    .010, -.001,  #tiny pads for SMD; dummy drill size (too small for practical use, but needed so StandardTool will use this entry)
    .031, -.014,  #used for vias
    .041, -.020,  #smallest non-filled plated hole
    .051, -.025,
    .056, -.029,  #useful for IC pins
    .070, -.033,
    .075, -.040,  #heavier leads
#    .090, -.043,  #NOTE: 600 dpi is not high enough resolution to reliably distinguish between .043" and .046", so choose 1 of the 2 here
    .100, -.046,
    .115, -.052,
    .130, -.061,
    .140, -.067,
    .150, -.079,
    .175, -.088,
    .190, -.093,
    .200, -.100,
    .220, -.110,
    .160, -.125,  #useful for mounting holes
#some additional pad sizes without holes (repeat a previous hole size if you just want the pad size):
    .090, -.040,  #want a .090 pad option, but use dummy hole size
    .065, -.040, #.065 x .065 rect pad
    .035, -.040, #.035 x .065 rect pad
#traces:
    .001,  #too thin for real traces; use only for board outlines
    .006,  #minimum real trace width; mainly used for text
    .008,  #mainly used for mid-sized text, not traces
    .010,  #minimum recommended trace width for low-current signals
    .012,
    .015,  #moderate low-voltage current
    .020,  #heavier trace for power, ground (even if a lighter one is adequate)
    .025,
    .030,  #heavy-current traces; be careful with these ones!
    .040,
    .050,
    .060,
    .080,
    .100,
    .120,
);
#Areas larger than the values below will be filled with parallel lines:
#This cuts down on the number of aperture sizes used.
#Set to 0 to always use an aperture or drill, regardless of size.
use constant { MAX_APERTURE => max((TOOL_SIZES)) + .004, MAX_DRILL => -min((TOOL_SIZES)) + .004 }; #max aperture and drill sizes (plus a little tolerance)
#DebugPrint(sprintf("using %d standard tool sizes: %s, max aper %.3f, max drill %.3f\n", scalar((TOOL_SIZES)), join(", ", (TOOL_SIZES)), MAX_APERTURE, MAX_DRILL), 1);

#NOTE: Compare the PDF to the original CAD file to check the accuracy of the PDF rendering and parsing!
#for example, the CAD software I used generated the following circles for holes:
#CAD hole size:   parsed PDF diameter:      error:
#  .014                .016                +.002
#  .020                .02267              +.00267
#  .025                .026                +.001
#  .029                .03167              +.00267
#  .033                .036                +.003
#  .040                .04267              +.00267
#This was usually ~ .002" - .003" too big compared to the hole as displayed in the CAD software.
#To compensate for PDF rendering errors (either during CAD Print function or PDF parsing logic), adjust the values below as needed.
#units are pixels; for example, a value of 2.4 at 600 dpi = .0004 inch, 2 at 600 dpi = .0033"
use constant
{
    HOLE_ADJUST => -0.004 * 600, #-2.6, #holes seemed to be slightly oversized (by .002" - .004"), so shrink them a little
    RNDPAD_ADJUST => -0.003 * 600, #-2, #-2.4, #round pads seemed to be slightly oversized, so shrink them a little
    SQRPAD_ADJUST => +0.001 * 600, #+.5, #square pads are sometimes too small by .00067, so bump them up a little
    RECTPAD_ADJUST => 0, #(pixels) rectangular pads seem to be okay? (not tested much)
    TRACE_ADJUST => 0, #(pixels) traces seemed to be okay?
    REDUCE_TOLERANCE => .001, #(inches) allow this much variation when reducing circles and rects
};

#Also, my CAD's Print function or the PDF print driver I used was a little off for circles, so define some additional adjustment values here:
#Values are added to X/Y coordinates; units are pixels; for example, a value of 1 at 600 dpi would be ~= .002 inch
use constant
{
    CIRCLE_ADJUST_MINX => 0,
    CIRCLE_ADJUST_MINY => -0.001 * 600, #-1, #circles were a little too high, so nudge them a little lower
    CIRCLE_ADJUST_MAXX => +0.001 * 600, #+1, #circles were a little too far to the left, so nudge them a little to the right
    CIRCLE_ADJUST_MAXY => 0,
    SUBST_CIRCLE_CLIPRECT => FALSE, #generate circle and substitute for clip rects (to compensate for the way some CAD software draws circles)
    WANT_CLIPRECT => TRUE, #FALSE, #AI doesn't need clip rect at all? should be on normally?
    RECT_COMPLETION => FALSE, #TRUE, #fill in 4th side of rect when 3 sides found
};

#allow .012 clearance around pads for solder mask:
#This value effectively adjusts pad sizes in the TOOL_SIZES list above (only for solder mask layers).
use constant SOLDER_MARGIN => +.012; #units are inches

#line join/cap styles:
use constant
{
    CAP_NONE => 0, #butt (none); line is exact length
    CAP_ROUND => 1, #round cap/join; line overhangs by a semi-circle at either end
    CAP_SQUARE => 2, #square cap/join; line overhangs by a half square on either end
    CAP_OVERRIDE => FALSE, #cap style overrides drawing logic
};
    
#number of elements in each shape type:
use constant
{
    RECT_SHAPELEN => 6, #x0, y0, x1, y1, count, "rect" (start, end corners)
    LINE_SHAPELEN => 6, #x0, y0, x1, y1, count, "line" (line seg)
    CURVE_SHAPELEN => 10, #xstart, ystart, x0, y0, x1, y1, xend, yend, count, "curve" (bezier 2 points)
    CIRCLE_SHAPELEN => 5, #x, y, 5, count, "circle" (center + radius)
};
#const my %SHAPELEN =
#Readonly my %SHAPELEN =>
our %SHAPELEN =
(
    rect => RECT_SHAPELEN,
    line => LINE_SHAPELEN,
    curve => CURVE_SHAPELEN,
    circle => CIRCLE_SHAPELEN,
);

#panelization:
#This will repeat the entire body the number of times indicated along the X or Y axes (files grow accordingly).
#Display elements that overhang PCB boundary can be squashed or left as-is (typically text or other silk screen markings).
#Set "overhangs" TRUE to allow overhangs, FALSE to truncate them.
#xpad and ypad allow margins to be added around outer edge of panelized PCB.
use constant PANELIZE => {'x' => 1, 'y' => 1, 'xpad' => 0, 'ypad' => 0, 'overhangs' => TRUE}; #number of times to repeat in X and Y directions

# Set this to 1 if you need TurboCAD support.
#$turboCAD = FALSE; #is this still needed as an option?

#CIRCAD pad generation uses an appropriate aperture, then moves it (stroke) "a little" - we use this to find pads and distinguish them from PCB holes. 
use constant PAD_STROKE => 0.3; #0.0005 * 600; #units are pixels
#convert very short traces to pads or holes:
use constant TRACE_MINLEN => .001; #units are inches
#use constant ALWAYS_XY => TRUE; #FALSE; #force XY even if X or Y doesn't change; NOTE: needs to be TRUE for all pads to show in FlatCAM and ViewPlot
use constant REMOVE_POLARITY => FALSE; #TRUE; #set to remove subtractive (negative) polarity; NOTE: must be FALSE for ground planes

#PDF uses "points", each point = 1/72 inch
#combined with a PDF scale factor of .12, this gives 600 dpi resolution (1/72 * .12 = 600 dpi)
use constant INCHES_PER_POINT => 1/72; #0.0138888889; #multiply point-size by this to get inches

# The precision used when computing a bezier curve. Higher numbers are more precise but slower (and generate larger files).
#$bezierPrecision = 100;
use constant BEZIER_PRECISION => 36; #100; #use const; reduced for faster rendering (mainly used for silk screen and thermal pads)

# Ground planes and silk screen or larger copper rectangles or circles are filled line-by-line using this resolution.
use constant FILL_WIDTH => .01; #fill at most 0.01 inch at a time

# The max number of characters to read into memory
use constant MAX_BYTES => 10 * M; #bumped up to 10 MB, use const

use constant DUP_DRILL1 => TRUE; #FALSE; #kludge: ViewPlot doesn't load drill files that are too small so duplicate first tool

my $runtime = time(); #Time::HiRes::gettimeofday(); #measure my execution time

print STDERR "Loaded config settings from '${\(__FILE__)}'.\n";
1; #last value must be truthful to indicate successful load


#############################################################################################
#junk/experiment:

#use Package::Constants;
#use Exporter qw(import); #https://perldoc.perl.org/Exporter.html

#my $caller = "pdf2gerb::";

#sub cfg
#{
#    my $proto = shift;
#    my $class = ref($proto) || $proto;
#    my $settings =
#    {
#        $WANT_DEBUG => 990, #10; #level of debug wanted; higher == more, lower == less, 0 == none
#    };
#    bless($settings, $class);
#    return $settings;
#}

#use constant HELLO => "hi there2"; #"main::HELLO" => "hi there";
#use constant GOODBYE => 14; #"main::GOODBYE" => 12;

#print STDERR "read cfg file\n";

#our @EXPORT_OK = Package::Constants->list(__PACKAGE__); #https://www.perlmonks.org/?node_id=1072691; NOTE: "_OK" skips short/common names

#print STDERR scalar(@EXPORT_OK) . " consts exported:\n";
#foreach(@EXPORT_OK) { print STDERR "$_\n"; }
#my $val = main::thing("xyz");
#print STDERR "caller gave me $val\n";
#foreach my $arg (@ARGV) { print STDERR "arg $arg\n"; }

Download Details:

Author: swannman
Source Code: https://github.com/swannman/pdf2gerb

License: GPL-3.0 license

#perl 

Shrikant Kumar

1614948679

Top 7 Mobile App Development Companies in Mumbai

Mobile has become the most important thing in our lives since it has dominated our lives in every sector of our life. Be it any field of life like ecommerce shopping, medicine, groceries or any banking requirement, mobile application has become the quite essential for our lives.

With the growing demand of mobile applications, many businesses have started taking help of mobile app development companies in Mumbai to make an online presence. Moreover, the mobile app development company in Mumbai helps any business to make a brand.

Since more and more companies are opting to find the best mobile app development company in Mumbai, let us dive in some of the best mobile app development companies in Mumbai:

  1. DxMinds
    Being a reputed mobile app development company in Mumbai, DxMinds delivers exceptional and amazing mobile apps. They craft innovative and appealing mobile apps. They have flexible engagement model such as Collaborative Development Center , build Operate and Transfer model, Turnkey and co-owned project services, contract staffing services etc. They have revolutionised the digital landscapes around the world in different places of India, USA, UAE, Australia and Peru. They deliver amazing mobile app development services like iOS, android and hybrid app development which have the best combination of AI, machine learning , blockchain, IOT, Big data , DevOps, cloud computing , gaming , AR/VR.

Their expert team of developers and skilled programmers always keep updated themselves with advanced technologies to deliver the best-in-class apps. They built the best mobile apps with great design since UI design matters a lot in great mobile applications.

HyperLink Infosystem

Founded in 2011, Hyperlink Info system is a professional mobile app development company in Mumbai offering a range of digital solutions from different offices in India, US, UK and Australia. They are a proud member of GESIA( Gujarat electronics & software industries association ) AND THEY ARE ISO 9001: 2008 certified company.
They serve various industries of retail, ecommerce, education &e-learning, healthcare and fitness, logistics and distribution, social networking, real estate , travel and hospitality , food and restaurant , on-demand solutions and gaming.

They have a proficient team of experienced and skilled professionals with 6-8 years of experience in latest mobile development technologies and frameworks. The team always work hard to strive excellence in their performance to deliver the best-in-class apps.
With a team of 200+, it never compromises on the quality of the mobile apps.

Heady

Founded in 2015, Heady is one of the top mobile app development companies in Mumbai with immense expertise in mobile app, website, and custom software development. With a team strength of more than 50 employees, they offers exceptional quality mobile apps which has become famous in the play store. They work for product strategy, product management, product design, engineering, DevOps, Growth.

The mobile developers assist the clienteles in every stage of development from conception to build to maintenance. They build innovative solutions through incremental optimizations. They always adhere to reliability, since they always assist them in every stage and help them even after the project is deployed. Support and maintenance is always provided to offer the client satisfaction.

Conclusion:
With the progressive growth in the digital world, every business tends towards mobile app development companies in Mumbai to develop the best and futurist mobile app to on-board the digital platform. Either you are a start-up or a well-established company, if you are seeking the best mobile application development agencies that can help you achieve your business objective then here is the list of top companies. Each of these companies has proven their expertise and has served multiple vertexes of various business domains.

#mobile app development companies in mumbai #mobile app development company in mumbai #mobile apps development companies in mumbai #mobile apps development company in mumbai #mobile application development companies in mumbai #mobile application development company in mumbai

Shrikant Kumar

1593434883

Top 7 Mobile App Development Companies in Bangalore, India

Are you looking for the leading Top Mobile App Development Companies in Bangalore, India? DxMinds Innovation Labs are one of the top-notch Best Mobile App Development Companies in Bangalore for Android and iOS apps. We have industry expert knowledgeable developers with years of experience in the field of application development. To know more visits to our Portfolio.

#mobile app development companies in bangalore #mobile app development company in bangalore #mobile apps development companies in bangalore #mobile apps development company in bangalore #mobile application development companies in bangalore #mobile application development company in bangalore

How many mobile app development companies are there in the USA?

This is a digital age, and the demand for mobile application websites or web applications is also increasing. In 2020, some people are confused about websites or web application development companies, or they view both as a source, but there are huge differences between websites and web applications. Although a web application (also known as a rich internet application) looks like a website, its function goes beyond displaying content. Web applications have business logic because it is more suitable for user interaction.

Vendors usually provide mobile application platforms for customers who want to move or enter the mobile market. The platform includes migration tools and resources that support mobile interfaces or development environments that allow the creation of new applications for the Apple and Android markets. The platform approach to mobile application development helps to provide developers and other users with a comprehensive model of the tool suite.

The following is a list of the most famous mobile application development companies in the United States. I have conducted research on multiple companies, not only to verify your ideas, but also to guide you to develop different profit strategies.

1. WebClues Infotech

WebClues Infotech is a leading developer of mobile applications, games and software development! -Experts in complex business-level solutions, business data analysis, development, personalization and implementation of complex Web and mobile solutions. With more than 8 years of experience, they serve customers with individuals, startups and companies. Their organization is actively improving and mastering industry development. E-learning, Internet of Things, artificial intelligence, machine learning, SaaS, augmented reality, virtual reality, etc., their qualified development teams are proficient in everything and are improving the industry.

2. AppClues Infotech

At AppClues is an innovative mobile application development company. Founded by industry experts, it is designed to help startups, entrepreneurs and winners build excellent products on mobile platforms. In a short period of time, AppClues has inspired the success of more than 150 startups worldwide, and has launched more than 130 companies to manage their operations, processes, and revenue using powerful mobile products.

3. WebClues Global

WebClues Global is a global technology consulting company that started with the development of multi-platform software and related equipment. They want to produce the best results that customers want and appreciate. Their commitment to providing superior customer service is only one of the factors that provide power in this ambitious industry. Indeed, they have very skilled mobile application developers, web developers, designers, and testers, all of whom work together by focusing on customer success.

4. AppClues Studio

AppClues Studio is a top mobile application development company. They always create wonderful, wise and rapid development for each project, and their team inspires digital creativity through end-to-end technical services. They always consider the rapid implementation and management of each stage of the software development life cycle. In addition, their application support services will proactively prevent your application from malfunctioning in a changing community at any time.

5. DataEximIT

DataEximIT is a leading software development company that provides the latest technology services. They provide services in website and mobile application development, UI/UX design, quality assurance and deployment. They provide services with blockchain, website development, mobile application development, and UI/UX design.

The companies listed above rank highest in their respective fields of mobile application development. Referencing this list will help you choose the right company for your next mobile app development project.

#mobile app development companies in usa #best mobile app development companies in usa #top mobile app development companies in usa #custom mobile app development companies in usa #leading mobile app development companies in usa #professional mobile app development companies in usa

Shrikant Kumar

1593435077

Top 7 Mobile App Development Companies in Delhi NCR

Are you searching for the first-class Mobile App Development Companies in Delhi? DxMinds Innovation Labs are one of the top-rated Mobile App Development Company in Delhi, India. We make sure the best services provided to you with the knowledgeable app developers of our company.

#mobile app development companies in delhi #mobile app development company in delhi #top mobile app development companies in delhi #top mobile app development company in delhi #best mobile app development companies in delhi #best mobile app development company in delhi