Can a virus be signed?

Chronicle found that Sectigo, formerly known as Comodo, had issued the highest number of digital certificates which were used to sign malware over the observed time period, with nearly 2,000 certificates. Thawte and VeriSign came in second and third most popular CA when it comes to signed malware.
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How can you tell if you have malware?

Here are a few telltale signs that you have malware on your system:
  1. Your computer slows down. ...
  2. Your screen is inundated with annoying ads. ...
  3. Your system crashes. ...
  4. You notice a mysterious loss of disk space. ...
  5. There's a weird increase in your system's Internet activity. ...
  6. Your browser settings change.
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How do I know if I have malware on my phone?

A few signs you've got mobile malware and your device has been compromised include:
  1. Battery draining faster.
  2. Pop-up ads.
  3. Unexplained apps.
  4. A surge in data consumption.
  5. Unexplained charges.
  6. Reduced performance.
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What is email malware?

An email virus consists of malicious code distributed in email messages to infect one or more devices. This malicious code can be activated in numerous ways: when the email recipient clicks on an infected link within the message, opens an infected attachment or interacts with the message in some other way.
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How does malware get on your computer?

Malware can get onto your device when you open or download attachments or files, or visit a scammy website. Your device might get infected with malware through: downloading free stuff like illegal downloads of popular movies, TV shows, or games. downloading content available on file-sharing sites.
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How can you tell a fake virus warning?

A pop-up window claiming to have scanned your computer and found evidence of viruses would cause anyone alarm. However, if it comes from a company or program other than your own security software, or if it appears in a different format than you're used to, then tread carefully, as it's likely to be a scam.
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Do computer viruses still exist?

Strictly speaking, viruses no longer really exist. Original virus writers were mostly gunning for Microsoft, but innovations in security technology have pretty much rendered the old-school replicating code programs obsolete.
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What is a worms on a computer?

A computer worm is a type of malware whose primary function is to self-replicate and infect other computers while remaining active on infected systems. A computer worm duplicates itself to spread to uninfected computers.
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What is a logic bomb virus?

A logic bomb is a string of malicious code inserted intentionally into a program to harm a network when certain conditions are met.
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Can you be hacked by just opening an email?

No, you can't get hacked by simply opening an email. This was possible before when emails would run JavaScript in the preview pane allowing malware to spread without any action from the user.
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How can I clean my phone from viruses?

How to remove viruses and other malware from your Android device
  1. Power off the phone and reboot in safe mode. Press the power button to access the Power Off options. ...
  2. Uninstall the suspicious app. ...
  3. Look for other apps you think may be infected. ...
  4. Install a robust mobile security app on your phone.
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How do I scan my phone for viruses?

While antivirus is the most secure way to protect your Android against malware, Play Protect is a built in software that can be useful as a secondary protection measure. To enable, choose the play store app. Open the menu in the upper left corner. Turn on the option to scan your device for security threats.
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Can an iPhone get a virus?

Fortunately for Apple fans, iPhone viruses are extremely rare, but not unheard of. While generally secure, one of the ways iPhones may become vulnerable to viruses is when they are 'jailbroken'. Jailbreaking an iPhone is a bit like unlocking it — but less legitimate.
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Do phones get viruses?

Android devices are more vulnerable to viruses—rooted or not—since the OS allows access to third-party apps not available in the Play Store. External apps available on websites and other platforms are not always safe; some may contain malicious codes and files. Rooted Android phones are more vulnerable to viruses.
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Can you get hacked by watching a YouTube video?

You should be safe just watching a video but be careful of clicking on ads as these sometimes can turn out to be malicious. In September 2014 scammers served up dodgy adverts on YouTube and other big sites such as Yahoo! and Amazon.
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Can malware go undetected?

It's possible that malware can go undetected, then, but the odds are absolutely minimal if you're very careful, and first and foremost practice the safe surfing and other good security habits we mentioned.
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What is Web jacking?

INTRODUCTION. When a Web application improperly redirects a user's browser from a page on a trusted domain to a bogus domain without the user's consent, it's called Web Jacking.
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What is a backdoor virus?

A backdoor is a malware type that negates normal authentication procedures to access a system. As a result, remote access is granted to resources within an application, such as databases and file servers, giving perpetrators the ability to remotely issue system commands and update malware.
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What is trap door virus?

Trap door is the new jargon for Backdoor Programs or Backdoor virus in Software field. A trap door is a secret entry point into a program that allows someone that is aware of the trap door to gain access without going through the usual security access procedures.
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What do Trojans do?

A Trojan horse, or Trojan, is a type of malicious code or software that looks legitimate but can take control of your computer. A Trojan is designed to damage, disrupt, steal, or in general inflict some other harmful action on your data or network. A Trojan acts like a bona fide application or file to trick you.
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What is a spyware virus?

Spyware is malicious software that enters a user's computer, gathers data from the device and user, and sends it to third parties without their consent. A commonly accepted spyware definition is a strand of malware designed to access and damage a device without the user's consent.
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Is adware a virus?

Adware is a more succinct name for potentially unwanted programs. It's not quite a virus and it may not be as obviously malicious as a lot of other problematic code floating around on the Internet.
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What is the most deadliest computer virus?

Mydoom – $38 billion

The worst computer virus outbreak in history, Mydoom caused estimated damage of $38 billion in 2004, but its inflation-adjusted cost is actually $52.2 billion. Also known as Novarg, this malware is technically a “worm,” spread by mass emailing.
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Who created the first virus?

As noted by Discovery, the Creeper program, often regarded as the first virus, was created in 1971 by Bob Thomas of BBN. Creeper was actually designed as a security test to see if a self-replicating program was possible.
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How can I create a virus?

In order to create a virus, you will need to have at least a basic understanding of at least one computer language or scripting tool. More complex viruses often involve several languages. For really effective viruses, you will need to be familiar with assembly languages.
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