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Emotet, a notorious email-based malware behind several botnet-driven spam campaigns and ransomware attacks, contained a flaw that allowed cybersecurity researchers to activate a kill-switch and prevent the malware from infecting systems for six months. "Most of the vulnerabilities and exploits that you read about are good news for attackers and bad news for the rest of us," Binary Defense's James Quinn said. "However, it's important to keep in mind that malware is software that can also have flaws. Just as attackers can exploit flaws in legitimate software to cause harm, defenders can also reverse-engineer malware to discover its vulnerabilities and then exploit those to defeat the malware." The kill-switch was alive between February 6, 2020, to August 6, 2020, for 182 days, before the malware authors patched their malware and closed the vulnerability. Since its first identification in 2014, Emotet has evolved from its initial roots as a banking ...

Web applications suffer continuously evolving attacks, where a web application firewall (WAF) is the first line of defense and a necessary part of organizations' cybersecurity strategies. WAFs are getting more sophisticated all the time, but as its core protection starts with efficient pattern matching, typically using Regular Expressions, and classifying malicious traffic to block cyber attacks. Evading pattern matching However, unfortunately, this technique is no silver bullet against determined attackers. Once it's known that there is a protection layer enabled, malicious actors find ways to bypass it, and most of the time, they even succeed. It usually can be achieved when the same attacking payload, blocked by WAF , can be disguised to make it 'invisible' to the pattern matching mechanism to evade security. Context-Specific Obfuscation The web uses many technologies, and they all have different rules for what comprises valid syntax in their grammar...

A team of academic researchers—who previously made the headlines earlier this year for uncovering severe security issues in the 4G LTE and 5G networks —today presented a new attack called ' ReVoLTE ,' that could let remote attackers break the encryption used by VoLTE voice calls and spy on targeted phone calls. The attack doesn't exploit any flaw in the Voice over LTE (VoLTE) protocol; instead, it leverages weak implementation of the LTE mobile network by most telecommunication providers in practice, allowing an attacker to eavesdrop on the encrypted phone calls made by targeted victims. VoLTE or Voice over Long Term Evolution protocol is a standard high-speed wireless communication for mobile phones and data terminals, including Internet of things (IoT) devices and wearables, deploying 4G LTE radio access technology. The crux of the problem is that most mobile operators often use the same keystream for two subsequent calls within one radio connection to encrypt th...

Attention! If you use Amazon's voice assistant Alexa in you smart speakers, just opening an innocent-looking web-link could let attackers install hacking skills on it and spy on your activities remotely. Check Point cybersecurity researchers—Dikla Barda, Roman Zaikin and Yaara Shriki—today disclosed severe security vulnerabilities in Amazon's Alexa virtual assistant that could render it vulnerable to a number of malicious attacks. According to a new report released by Check Point Research and shared with The Hacker News, the "exploits could have allowed an attacker to remove/install skills on the targeted victim's Alexa account, access their voice history and acquire personal information through skill interaction when the user invokes the installed skill." "Smart speakers and virtual assistants are so commonplace that it's easy to overlook just how much personal data they hold, and their role in controlling other smart devices in our homes,...

Microsoft earlier today released its August 2020 batch of software security updates for all supported versions of its Windows operating systems and other products. This month's Patch Tuesday updates address a total of 120 newly discovered software vulnerabilities, of which 17 are critical, and the rest are important in severity. In a nutshell, your Windows computer can be hacked if you: Play a video file — thanks to flaws in Microsoft Media Foundation and Windows Codecs Listen to audio — thanks to bugs affecting Windows Media Audio Codec Browser a website — thanks to 'all time buggy' Internet Explorer Edit an HTML page — thanks to an MSHTML Engine flaw Read a PDF — thanks to a loophole in Microsoft Edge PDF Reader Receive an email message — thanks to yet another bug in Microsoft Outlook But don't worry, you don't need to stop using your computer or without Windows OS on it. All you need to do is click on the Start Menu → open Settings → click Security...