A week in security (October 27 – November 2)

Last week on Malwarebytes Labs: Update Chrome now: 20 security fixes just landed How scammers use your data to create personalized tricks that work Ransomware gang claims Conduent breach: what you should watch for next Fake PayPal invoice from Geek Squad is a tech support scam Atlas browser’s...

Federated Cyber Defense: Privacy-Preserving Ransomware Detection across Distributed Systems

Detecting malware, especially ransomware, is essential to securing today's interconnected ecosystems, including cloud storage, enterprise file-sharing, and database services. Training high-performing artificial intelligence AI detectors requires diverse datasets, which are often distributed acros...

Ukrainian Conti Ransomware Suspect Extradited to US from Ireland

Ukrainian man accused of helping run Conti ransomware extradited from Ireland to the U.S. to face charges over global cyberattacks and $150M in ransom payments...

Akira Ransomware Claims It Stole 23GB from Apache OpenOffice

The Akira ransomware group claims to have stolen 23GB of data from Apache OpenOffice, including employee and financial records, though the breach remains unverified...

Russian Ransomware Gangs Weaponize Open-Source AdaptixC2 for Advanced Attacks

The open-source command-and-control C2 framework known as AdaptixC2 is being used by a growing number of threat actors, some of whom are related to Russian ransomware gangs. AdaptixC2 is an emerging extensible post-exploitation and adversarial emulation framework designed for penetration testing...

Ransomware gang claims Conduent breach: what you should watch for next [updated]

Update – October 30, 2025: New information confirms that Conduent’s 2024 breach has impacted over 10.5 million people, based on notifications filed with multiple state attorneys general. The largest disclosure came from the Oregon government, which reported a total of 10.5 million affected US...

Russian Hackers Exploit Adaptix Pentesting Tool in Ransomware Attacks

Silent Push wars of Russian hackers exploiting Adaptix, a pentesting tool built for Windows, Linux, and macOS, in ransomware campaigns...

Cybersecurity on a budget: Strategies for an economic downturn

During economic uncertainty, businesses face the challenge of maintaining strong cybersecurity while managing tightened budgets. Cyber threats can become more numerous, motivated, and persistent during economic downturns, making the need for resilient, cost-effective security measures critical...

An In-Depth Analysis of Cyber Attacks in Secured Platforms

There is an increase in global malware threats. To address this, an encryption-type ransomware has been introduced on the Android operating system. The challenges associated with malicious threats in phone use have become a pressing issue in mobile communication, disrupting user experiences and...

Everest Leaks AT&T Records, Demands $1M for Dublin Airport Passenger Data

Everest ransomware group leaks alleged AT&T Carrier data, demands $1 million for Dublin Airport files and $2 million for Air Arabia employee records...

⚡ Weekly Recap: WSUS Exploited, LockBit 5.0 Returns, Telegram Backdoor, F5 Breach Widens

Security, trust, and stability — once the pillars of our digital world — are now the tools attackers turn against us. From stolen accounts to fake job offers, cybercriminals keep finding new ways to exploit both system flaws and human behavior. Each new breach proves a harsh truth: in...

Qilin Ransomware Combines Linux Payload With BYOVD Exploit in Hybrid Attack

The ransomware group known as Qilin aka Agenda, Gold Feather, and Water Galura has claimed more than 40 victims every month since the start of 2025, barring January, with the number of postings on its data leak site touching a high of 100 cases in June. The development comes as the...

Uncovering Qilin attack methods exposed through multiple cases

In the second half of 2025, the ransomware group Qilin has continued to publish victim information on its leak site at a pace of more than 40 cases per month, making it one of the most impactful ransomware groups worldwide. The manufacturing sector has been the most affected, followed by...

Everest Ransomware Says It Stole 1.5M Dublin Airport Passenger Records

Everest ransomware group claims to have stolen 1.5 million passenger records from Dublin Airport and personal data of 18,000 Air Arabia employees in latest breaches...

Everest Ransomware Claims AT&T Careers Breach with 576K Records

Everest ransomware group claims a breach of AT&T Careers, alleging theft of 576,000 applicant and employee records locked behind a password-protected listing...

Medusa Ransomware Leaks 834 GB of Comcast Data After $1.2M Demand

Medusa ransomware leaks 186 GB of Comcast data, claiming 834 GB stolen after a $1.2M ransom demand apparently went unpaid...

IR Trends Q3 2025: ToolShell attacks dominate, highlighting criticality of segmentation and rapid response

Threat actors predominately exploited public-facing applications for initial access this quarter, with this tactic appearing in over 60 percent of Cisco Talos Incident Response Talos IR engagements - a notable increase from less than 10 percent last quarter. This spike is largely attributable to ...

Agenda Ransomware Deploys Linux Variant on Windows Systems Through Remote Management Tools and BYOVD Techniques

Trend™ Research identified a sophisticated Agenda ransomware attack that deployed a Linux variant on Windows systems. This cross-platform execution can make detection challenging for enterprises...

Canada Fines Cybercrime Friendly Cryptomus $176M

Financial regulators in Canada this week levied $176 million in fines against Cryptomus , a digital payments platform that supports dozens of Russian cryptocurrency exchanges and websites hawking cybercrime services. The penalties for violating Canada's anti money-laundering laws come ten months...

SocGholish Malware Using Compromised Sites to Deliver Ransomware

New research on SocGholish FakeUpdates reveals how this MaaS platform is used by threat actors like Evil Corp and RansomHub to compromise websites, steal data, and launch high-impact attacks on healthcare and businesses worldwide...