New Study Warns of Security Threats Linked to Recycled Phone Numbers

A new academic study has highlighted a number of privacy and security pitfalls associated with recycling mobile phone numbers that could be abused to stage a variety of exploits, including account takeovers, conduct phishing and spam attacks, and even prevent victims from signing up for online services. Nearly 66% of the recycled numbers that were sampled were found to be tied to previous ownersSource...

Continuar lendo

BIOS PrivEsc Bugs Affect Hundreds of Millions of Dell PCs Worldwide

PC maker Dell has issued an update to fix multiple critical privilege escalation vulnerabilities that went undetected since 2009, potentially allowing attackers to gain kernel-mode privileges and cause a denial-of-service condition. The issues, reported to Dell by researchers from SentinelOne on Dec. 1, 2020, reside in a firmware update driver named "dbutil_2_3.sys" that comes pre-installed onSource...

Continuar lendo

ALERT — New 21Nails Exim Bugs Expose Millions of Email Servers to Hacking

The maintainers of Exim have released patches to remediate as many as 21 security vulnerabilities in its software that could enable unauthenticated attackers to achieve complete remote code execution and gain root privileges. Collectively named '21Nails,' the flaws include 11 vulnerabilities that require local access to the server and 10 other weaknesses that could be exploited remotely. TheSource...

Continuar lendo

New Pingback Malware Using ICMP Tunneling to Evade C&C Detection

Researchers on Tuesday disclosed a novel malware that uses a variety of tricks to stay under the radar and evade detection, while stealthily capable of executing arbitrary commands on infected systems. Called 'Pingback,' the Windows malware leverages Internet Control Message Protocol (ICMP) tunneling for covert bot communications, allowing the adversary to utilize ICMP packets to piggybackSource...

Continuar lendo

How Should the Service Desk Reset Passwords?

Ask the average helpdesk technician what they do all day, and they will probably answer by saying that they reset passwords. Sure, helpdesk technicians do plenty of other things too, but in many organizations, a disproportionate number of helpdesk calls are tied to password resets. On the surface, having a helpdesk technician reset a user’s password probably doesn’t seem like a big deal. AfterSource...

Continuar lendo

Critical Patch Out for Critical Pulse Secure VPN 0-Day Under Attack

Ivanti, the company behind Pulse Secure VPN appliances, has released a security patch to remediate a critical security vulnerability that was found being actively exploited in the wild by at least two different threat actors. Tracked as CVE-2021-22893 (CVSS score 10), the flaw concerns "multiple use after free" issues in Pulse Connect Secure that could allow a remote unauthenticated attacker toSource...

Continuar lendo

Apple Releases Urgent Security Patches For Zero‑Day Bugs Under Active Attacks

Apple on Monday released security updates for iOS, macOS, and watchOS to address three zero-day flaws and expand patches for a fourth vulnerability that the company said might have been exploited in the wild. <!--adsense--> The weaknesses all concern WebKit, the browser engine which powers Safari and other third-party web browsers in iOS, allowing an adversary to execute arbitrary code on targetSource...

Continuar lendo

Over 40 Apps With More Than 100 Million Installs Found Leaking AWS Keys

Most mobile app users tend to blindly trust that the apps they download from app stores are safe and secure. But that isn't always the case. To demonstrate the pitfalls and identify vulnerabilities on a large scale, cybersecurity and machine intelligence company CloudSEK recently provided a platform called BeVigil where individuals can search and check app security ratings and other securitySource...

Continuar lendo

A Rust-based Buer Malware Variant Has Been Spotted in the Wild

Cybersecurity researchers on Monday disclosed a new malspam campaign distributing a fresh variant of a malware loader called 'Buer' written in Rust, illustrating how adversaries are constantly honing their malware toolsets to evade analysis. Dubbed "RustyBuer," the malware is propagated via emails masquerading as shipping notices from DHL Support, and is said to have affected no fewer than 200Source...

Continuar lendo

New Chinese Malware Targeted Russia’s Largest Nuclear Submarine Designer

A threat actor believed to be working on behalf of Chinese state-sponsored interests was recently observed targeting a Russia-based defense contractor involved in designing nuclear submarines for the naval arm of the Russian Armed Forces. The phishing attack, which singled out a general director working at the Rubin Design Bureau, leveraged the infamous "Royal Road" Rich Text Format (RTF)Source...

Continuar lendo