PaperCut Attacker Uses Hundreds of AI Agents to Compromise 440+ Instances

A suspected Russian-speaking cyber actor has been attributed to the use of artificial intelligence AI to devise exploits targeting a recently disclosed pair of security flaws in PaperCut NG/MF and break into hundreds of instances. According to independent reports from Blackpoint Cyber and...

Attackers Exploit PaperCut Flaws to Steal Credentials From Schools and Universities

Threat actors are exploiting the newly disclosed PaperCut flaws to facilitate credential theft in attacks targeting the education sector in the U.S. and Europe. The Arctic Wolf Adversary Research Team said it observed attackers exploiting CVE-2026-81578 and CVE-2026-82078 – an authentication bypa...

Microsoft 365 AitM Phishing Hijacks Accounts to Collect Payroll and Finance Emails

Cybersecurity researchers have called attention to an active "widespread email-driven phishing campaign" that employs adversary-in-the-middle AitM techniques to take control of Microsoft 365 accounts with an aim to identify key personnel involved in financial workflows and gather related email...

CISA Warns Fortinet Customers as FortiBleed Hits 86,644 FortiGate Devices

The U.S. Cybersecurity and Infrastructure Security Agency CISA on Thursday urged Fortinet customers with FortiGate appliances to take steps to secure against ongoing malicious activity aimed at thousands of internet-accessible devices. The sweeping campaign, believed to be the work of...

ClickFix Campaigns Expand Malware Delivery With New Loaders and Fake Update Lures

Cybersecurity researchers have flagged multiple ClickFix campaigns that deliver three malware loaders called BabaDeda Loader , Lorem Ipsum Loader , and Potemkin , per independent reports from Morphisec, BlueVoyant, and Huntress, respectively. Attacks involving BabaDeda Loader, observed in April...

North Korean Hackers Are Turning Developer Tools Into Malware Delivery Channels

Cybersecurity researchers have flagged two malicious cyber campaigns that exhibit similarities with a persistent North Korean threat cluster known as Contagious Interview aka Famous Chollima, HexagonalRodent, and Void Dokkaebi. According to a report published by Proofpoint, the threat actor has...

Fake malware-signing service Fox Tempest dismantled by Microsoft

Microsoft says it dismantled a malware-signing-as-a-service MSaaS called Fox Tempest, which helped cybercriminals make malware appear legitimate. The service let customers submit malicious files to be digitally signed with short-lived Microsoft-issued certificates, making the malware look...

Microsoft Takes Down Malware-Signing Service Behind Ransomware Attacks

Microsoft on Tuesday said it disrupted a malware-signing-as-a-service MSaaS operation that weaponized the company's Artifact Signing system to deliver malicious code and conduct ransomware and other attacks, compromising thousands of machines and networks across the world. The tech giant attribut...

ThreatsDay Bulletin: Edge Plaintext Passwords, ICS 0-Days, Patch-or-Die Alerts and 25+ New Stories

Bad week. Turns out the easiest way to get hacked in 2026 is still the same old garbage: shady packages, fake apps, forgotten DNS junk, scam ads, and stolen logins getting dumped into Discord channels like it’s normal. Some of these attack chains don’t even feel sophisticated anymore. More like...

Storm-1175 Deploys Medusa Ransomware Within 24 Hours of Flaw Disclosure

Microsoft researchers have uncovered a fast-moving group, Storm-1175, launching high-speed Medusa ransomware attacks against healthcare and education sectors in the UK, US, and Australia by exploiting security flaws in as little as 24 hours...

China-Linked Storm-1175 Exploits Zero-Days to Rapidly Deploy Medusa Ransomware

A China-based threat actor known for deploying Medusa ransomware has been linked to the weaponization of a combination of zero-day and N-day vulnerabilities to orchestrate "high-velocity" attacks and break into susceptible internet-facing systems. "The threat actor's high operational tempo and...

Storm-1175 focuses gaze on vulnerable web-facing assets in high-tempo Medusa ransomware operations

In this article 1. Storm-1175’s rapid attack chain: From initial access to impact 2. Mitigation and protection guidance 3. Microsoft Defender detections 4. Indicators of compromise The financially motivated cybercriminal actor tracked by Microsoft Threat Intelligence as Storm-1175 operates...

UAT-10027 Targets U.S. Education and Healthcare with Dohdoor Backdoor

A previously undocumented threat activity cluster has been attributed to an ongoing malicious campaign targeting education and healthcare sectors in the U.S. since at least December 2025. The campaign is being tracked by Cisco Talos under the moniker UAT-10027. The end goal of the attacks is to...

New Dohdoor malware campaign targets education and health care

Cisco Talos discovered an ongoing malicious campaign since at least as early as December 2025 by a threat actor we track as "UAT-10027," delivering a previously undisclosed backdoor dubbed "Dohdoor." Dohdoor utilizes the DNS-over-HTTPS DoH technique for command-and-control C2 communications and h...

“A dare, a challenge, a bit of fun:” Children are hacking their own schools’ systems, says study

As if ransomware wasn’t enough of a security problem for the sector, educational institutions also need to worry about their own students, a recent study shows. Last week, the UK Information Commissioner’s Office ICO published a report about the "insider threat of students". Here are a few key...

FBI Warns FSB-Linked Hackers Exploiting Unpatched Cisco Devices for Cyber Espionage

A Russian state-sponsored cyber espionage group known as Static Tundra has been observed actively exploiting a seven-year-old security flaw in Cisco IOS and Cisco IOS XE software as a means to establish persistent access to target networks. Cisco Talos, which disclosed details of the activity, sa...

FBI Warns FSB-Linked Hackers Exploiting Unpatched Cisco Devices for Cyber Espionage

A Russian state-sponsored cyber espionage group known as Static Tundra has been observed actively exploiting a seven-year-old security flaw in Cisco IOS and Cisco IOS XE software as a means to establish persistent access to target networks. Cisco Talos, which disclosed details of the activity, sa...

Russian state-sponsored espionage group Static Tundra compromises unpatched end-of-life network devices

Static Tundra is a Russian state-sponsored cyber espionage group linked to the FSB's Center 16 unit that has been operating for over a decade, specializing in compromising network devices for long-term intelligence gathering operations. The group actively exploits a seven-year-old vulnerability...

FunkSec Ransomware Decryptor Released Free to Public After Group Goes Dormant

Cybersecurity experts have released a decryptor for a ransomware strain called FunkSec, allowing victims to recover access to their files for free. "Because the ransomware is now considered dead, we released the decryptor for public download," Gen Digital researcher Ladislav Zezula said. FunkSec,...

Google Exposes Vishing Group UNC6040 Targeting Salesforce with Fake Data Loader App

Google has disclosed details of a financially motivated threat cluster that it said "specializes" in voice phishing aka vishing campaigns designed to breach organizations' Salesforce instances for large-scale data theft and subsequent extortion. The tech giant's threat intelligence team is tracki...