Shared Memory in the Browser after Spectre

In January of 2018, a huge security vulnerability nicknamed Spectre was discovered that affected all modern microprocessors. It allowed malicious software to read pieces of computer memory used by unrelated programs, potentially exposing valuable information to hackers.

The way it accomplished this was by exploiting a feature of modern processors called Speculative Execution. This is an optimization technique where a cpu process basically does extra work in the background, predicting possible outcomes from instructions in its pipeline before they occur, in order to avoid waiting for specific instructions to happen and then performing operations. If the prediction was incorrect, the extra work is ignored and scrapped. If the prediction was correct, then the instructions are ready to execute much faster than they would have been in a completely stepwise linear fashion. By having some of the work ready to go in advance, CPUs avoid small delays and gain significant speed boosts on single-threaded processes.

Spectre uncovered a really clever way to exploit this technique. It basically involved running a program that starts by creating a specific series of instructions to prep the CPU, “training” it to start predicting future operations going a certain way. By training the speculative execution in this very controlled fashion, Spectre is able to constantly keep that unnecessary extra background work going on a specific portion of the CPU’s memory cache. The cache location corresponds with the memory address space used by the software being targeted in the attack. This execution of instructions and listening in on a specific designated memory cache location is known as a “microarchitectural covert channel.” Eventually the speculative instructions in the cache expose the data over the channel, which Spectre is able to record and give to the attacker.

Although it is a difficult attack to execute and has to target extremely specific applications, it has the potential to completely undermine any operations on a given CPU, regardless of the traditional security measures or cryptography used. The fact that Intel, AMD, and ARM processors were all vulnerable to these attacks created a serious emergency when it was discovered.

#spectre #chrome #javascript #webassembly #firefox #programming

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These are the Top 5 Browsers for Privacy and Security

Anonymity on the internet has been in a steady state of decline. In the interest of reversing that trend, this is a list of the top five browsers for privacy and security. While it should be noted that nothing published on the internet is perfectly private or secure, these are the browsers that will do the most to get you close.

The issue

Modern digital marketing agencies, eCommerce sites, and ISPs use cookies to show ads or monetize your browsing data without permission. If there’s a buck to be made, someone will make it.

But anonymous browsing can act as some sort of cover. Not complete cover, however, but more than it’s more than nothing. To enhance your privacy and security while browsing the web, consider these five browsers.

Tor Browser :

Tor is fully open-sourced and great for anonymous web browsing. It protects against snooping on web browsing activity. Nowadays a lot of ads agencies use this technique to serve you what they believe to be perfectly tantalizing ad content.

Tor is a cross-platform web browser, which means it supports platforms like Windows, macOS, Linu and more. It can also be used as via a USB device and configured to a user’s specifications. While many say it’s a browser designed for hackers, it can also be used by those who simply value their privacy.

Tor hides your IP, which means your physical location is unavailable to those looking for where you’re searching what. It also helps users get around restrictions used by governments looking to block what can be accessed within their borders.

Pros:

• An open-source browser
• Committed to privacy
• Comes with .onion browser extension for extra security
• Shields IP addresses from websites
• Uses strong server relays

Cons:

• Slower than regular browsers
• Doesn’t block malware
• Tells websites Tor is in use

#security #privacy #browsers #privacy-browsers #browsers-for-security #tor #secure-browsers

How much does it cost to build a video sharing app?

There are so many things you can do with your mobile phone, regardless of which operating system you use. Your smartphone is a miniature computer, which means you can use it to browse the web, stream music and download apps galore. You can also share videos with certain apps. There is no doubt that video, editing, recording, and sharing application development will give a wholesome solution to your app users and will help you make your application stand out from the competitors.

Are you searching for the app development company who build video sharing app? If yes then AppClues Infotech is the best mobile app development company offer world-class mobile app development services at competitive prices across all major mobile platforms for start-ups as well as enterprises. Our team of professional designers and developers can proficiently develop a video sharing mobile app tailored to your needs, to help you achieve the end result of your business gaining more market autonomy.

Our Expertise in Mobile App Development:

• iPhone App Development
• iPad App Development
• Apple Watch App Development
• Flutter App Development
• Android App Development
• Ionic App Development
• React Native App Development
• Windows App Development
• Cross-Platform App Development

We offer custom social networking app development solutions which are designed to not just make your brand a household name but also to keep your brand above the ever-growing crowd of entertainment mobile apps. We build mobile apps across various industry verticals including travel, social networking, restaurant, real estate, health care, news, etc.

The expense of video sharing app development depends on app size, app platform, app functionality, what features you require, the team of app developers, etc. So generally cost is in between $2,000 - 15,000. It can vary from app to app because every app has different requirements.

#video sharing app development #best video sharing app development company #top video sharing app development company #make a video sharing mobile app #cost to create a video sharing app

Shared Memory in the Browser after Spectre

In January of 2018, a huge security vulnerability nicknamed Spectre was discovered that affected all modern microprocessors. It allowed malicious software to read pieces of computer memory used by unrelated programs, potentially exposing valuable information to hackers.

The way it accomplished this was by exploiting a feature of modern processors called Speculative Execution. This is an optimization technique where a cpu process basically does extra work in the background, predicting possible outcomes from instructions in its pipeline before they occur, in order to avoid waiting for specific instructions to happen and then performing operations. If the prediction was incorrect, the extra work is ignored and scrapped. If the prediction was correct, then the instructions are ready to execute much faster than they would have been in a completely stepwise linear fashion. By having some of the work ready to go in advance, CPUs avoid small delays and gain significant speed boosts on single-threaded processes.

Spectre uncovered a really clever way to exploit this technique. It basically involved running a program that starts by creating a specific series of instructions to prep the CPU, “training” it to start predicting future operations going a certain way. By training the speculative execution in this very controlled fashion, Spectre is able to constantly keep that unnecessary extra background work going on a specific portion of the CPU’s memory cache. The cache location corresponds with the memory address space used by the software being targeted in the attack. This execution of instructions and listening in on a specific designated memory cache location is known as a “microarchitectural covert channel.” Eventually the speculative instructions in the cache expose the data over the channel, which Spectre is able to record and give to the attacker.

Although it is a difficult attack to execute and has to target extremely specific applications, it has the potential to completely undermine any operations on a given CPU, regardless of the traditional security measures or cryptography used. The fact that Intel, AMD, and ARM processors were all vulnerable to these attacks created a serious emergency when it was discovered.

#spectre #chrome #javascript #webassembly #firefox #programming

AOL Emails Not Loading Problems (+1-888-857-5157) in Chrome Browser

AOL Mail is one of the free email services that includes calendar management and task management. If your AOL Emails Not Loading Problems in Chrome Browser, try these troubleshooting steps which is mention below. In this post, we are trying to describe the reason behind AOL email not loading and how to resolve AOL mail loading issues.

3 Reason Behind AOL Emails Not Loading Problems

Reason #1. Whenever you are unable to receive the new emails into your computer. You should log into your AOL mail account and go to the settings and click on filter settings. Now check the account settings, if you find any filter. you need to click on delete. After deleting the settings, you should send a mail to yourself. Let’s see if you are receiving it now or not.

Reason #2. If you do not find any filters into your emails, you should check the block list settings, maybe you have blocked the new emails from senders. That’s why you are not receiving any new emails. so, you should immediately go ahead and check it.

Reason #3. If you are unable to receive the new emails into your phone or computer. I would like to suggest you to check the server settings. Most of the time, people are facing such kind of problem due to the incorrect server settings. So, you should check them properly and if you find something wrong over there. You need to remove the account from your computer or phone and then reconfigure it. It will start working fine.

How to Resolve AOL Emails Not Loading Problems in Chrome Browser

If Your AOL Emails Not Loading Problems in Chrome Browser then you can go and find a help to resolve this issue. To get through this problem, follow the instructions below:

Solution 1: Clear browsing data on Chrome

• On your computer, launch the Google Chrome browser after assuring that you have a stable Internet connection.
• Close all the browser tabs (if any) and open a new blank tab.
• Click the Customize and control Google Chrome icon at the top-right corner and select the More tools option from the drop-down list.
• In the pop-up window, navigate to the top-left corner and click the clear browsing data tab beneath History.
• When you are asked to choose the time limit, choose the Time
• After choosing all the data, click the Clear data button to remove all your Chrome browsing data.
• Once you have removed all the browsing data, sign in to your AOL Mail.
• If your AOL Mail is still not loading on Chrome, move on to the next solution.

Solution 2: Reset web settings

• On your Chrome browser, stop all the running tabs and start a blank tab.
• Navigate to the top-right corner of the tab and click the Customize and control Google Chrome icon (three vertical dots).
• Click on Settings from the drop-down list.
• Navigate to the bottom of the Settings page and click Advanced.
• Click the Reset Settings tab twice underneath Reset and clean up.
• Now, your Chrome browser will be restored to factory defaults.
• Restart your Chrome browser and navigate to the official AOL site.
• Enter the correct login credentials in the essential field and try signing in to your AOL email account.
  If AOL Mail is still not loading on Chrome, contact our technical support team by clicking the Call button available on this page for remote assistance.
  After this, if you are unable to resolve AOL emails loading problems in chrome browser, don’t be panic. Email Expert 24*7 team is here to resolve all AOL mail issues as soon as possible. Just Dial Customer Care Toll-Free Number: +1-888-857-5157 and get instant help. Our technical team’s services are available- 24x7.

Source: https://email-expert247.blogspot.com/2021/01/aol-emails-not-loading-problems-1-888.html

#aol mail not loading problems in chrome browser #aol email not loading problems in chrome browser #aol not loading problems in chrome browser #aol mail not loading issues in chrome browser #aol email not loading issues in chrome browser

How to Use Shared Preferences to Stored Data in Flutter | Shared preferences Flutter

Shared preferences flutter is for Storing simple data on Device for Reading & writing Simple Key-value pairs in iOS & Android.

In Simple Example, Let Just Say You Just Want to Stored Simple Data on Phone And Later You can refer that Data whenever You Launch that App then Shared preferences will help you to Stored data on the Phone.

Shared preferences in flutter NSUserDefaults on iOS & macOS, and SharedPreferences on Android.

💻Shared Preferences:- https://alltechsavvy.com/shared-preferences-flutter/

👩‍💻Github Code: https://github.com/sagarshende23/shared_preference_flutter

#shared #flutter #shared preferences flutter #shared preferences