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News alert: SquareX discloses nasty browser-native ransomware that’s undetectable by antivirus

The Last Watchdog

In the case studies demonstrated by SquareX , these attacks leverage AI agents to automate the majority of the attack sequence, requiring minimal social engineering and interference from the attacker. The post News alert: SquareX discloses nasty browser-native ransomware thats undetectable by antivirus first appeared on The Last Watchdog.

Antivirus 147
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Hiding Malware in ML Models

Schneier on Security

Meanwhile, since the structure of the neural network models remains unchanged, they can pass the security scan of antivirus engines. With the widespread application of artificial intelligence, utilizing neural networks becomes a forwarding trend of malware.

Malware 363
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Comparing Antivirus Software 2025: Avast vs. AVG

eSecurity Planet

An antivirus can offer some security for users worried about stumbling upon malware while browsing the Internet. A good antivirus can detect malware on whatever device the antivirus is scanning. A lot of what an antivirus gives users is peace of mind and a feeling of safety when using their computer.

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Avast disables the JavaScript engine component due to a severe issue

Security Affairs

Antivirus maker Avast has disabled a core component of its antivirus to address a severe vulnerability that would have allowed attackers to control users’ PC. The Avast’s JavaScript engine is used to analyze JavaScript code to detect malicious code before it is executed in the users’ browsers or email clients.

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Cybercriminals Using Powerful BatCloak Engine to Make Malware Fully Undetectable

The Hacker News

A fully undetectable (FUD) malware obfuscation engine named BatCloak is being used to deploy various malware strains since September 2022, while persistently evading antivirus detection.

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Cisco warns of a ClamAV bug with PoC exploit

Security Affairs

Cisco ClamAV (Clam AntiVirus) is an open-source antivirus engine designed to detect malware, viruses, and other malicious threats. The vulnerability resides in the Object Linking and Embedding 2 (OLE2) decryption routine of ClamAV.

Antivirus 130
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The Pentagon is Publishing Foreign Nation-State Malware

Schneier on Security

This is a new thing : The Pentagon has suddenly started uploading malware samples from APTs and other nation-state sources to the website VirusTotal, which is essentially a malware zoo that's used by security pros and antivirus/malware detection engines to gain a better understanding of the threat landscape.

Malware 270