CERT Polska
Warnings and incidents · Poland
Source digest
Cybersecurity — Poland and the world
Latest publications from Polish and international security outlets and response teams: threat warnings, vulnerabilities, regulatory changes, campaigns abroad, technical analyses and guides. Every entry gives a title, a short summary and a link to the publisher’s full article.
48 entries match
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ConnectWise Suspends Cloud Backup After Attackers Compromise Microsoft 365 Tenants
ConnectWise on Saturday said it has disabled seven ConnectWise application identities as it continues its investigation into an incident in which unknown threat actors obtained unauthorized access to the application identities and compromised Microsoft 365…
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Hackers breach Microsoft 365 tenants via ConnectWise supply-chain attack
ConnectWise has shut down customer access to its Cloud Backup service (formerly SkyKick Cloud Backup) after hackers accessed application identities and compromised Microsoft 365 tenants. [...]
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Hackers Use Compromised ConnectWise Credential to Sign In to 173 Microsoft 365 Tenants
Cybersecurity researchers are sounding the alarm related to an active campaign in which unknown threat actors are abusing a compromised Microsoft 365 (M365) credential belonging to ConnectWise Cloud Backup (formerly SkyKick) to gain unauthorized access to…
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PEERSTITCH Malware Deployed via FortiOS Flaw Bypasses Checks on Tagged VPN Sessions
A suspected advanced threat actor has been observed exploiting a security flaw in Fortinet FortiOS to deliver a previously unreported memory-resident ARM64 malware known as PEERSTITCH. The attack involves the exploitation of CVE-2025-61624 (CVSS score: 5.4)…
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Critical PwnEscape Linux Kernel Vulnerability Lets Guest VMs Read Host Memory
A newly disclosed critical flaw in the Linux kernel allows code inside a virtual machine to read memory on the host computer it runs on. A researcher demonstrated the leak against Vercel's live cloud sandboxes, and Vercel confirmed it. The flaw, now tracked…
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The Hacker News World Campaigns and vulnerabilities Phishing and fraud Cloud and identity 3 days ago
Help TDS Linked to Hotejka as 20,000+ Cloudflare Pages Domains Host Tech Support Scams
A long-running Traffic Distribution System (TDS) known as Help TDS to a Russian-language affiliate program called Hotejka, which appears to be a rebrand of a traffic monetization operation dubbed ROI777. Help TDS is assessed to be active since at least 2017…
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GhostAction Compromises About 1,900 GitHub Accounts, Targets Over 30,000 Repositories
The credential-theft campaign known as GhostAction has ramped up, targeting more than 30,000 repositories across 3,000 users and organizations. The spike, according to GitGuardian, was observed on October 8 and 9, 2026. "This resulted from compromising the…
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Yam Store: The Phishing Network Behind a Billion Messages
A sprawling cybercrime marketplace supplied cloud infrastructure and phishing kits that helped fuel more than 1 billion phishing messages worldwide.
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Anthropic 'SneakPeek' Flaw Is a Silent Zero-Click Threat
A bug in Claude Code Desktop's preview pane can allow adversaries to quietly steal credentials from developers, including SSH private keys, AWS credentials, and Claude 0Auth tokens.
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The Hacker News World Campaigns and vulnerabilities Phishing and fraud Cloud and identity 4 days ago
Microsoft Disrupts 3 Phishing Kits Linked to Over 1 Billion Scam Messages
Microsoft and Health-ISAC, along with the Japan Cybercrime Control Center (JC3) and a coalition of private sector companies, such as Resecurity, Cloudflare, Oracle, Proofpoint, and TRM Labs, announced the disruption of three phishing kits, CoGUI (aka NX or…
Page 1 of 5 · 48 entries in the archive
Entries stay here even after they drop out of the publishers’ RSS feeds. The links point to the originals — if a publisher removes an article, its link stops working.
Where the entries come from
Tracked sources
Niebezpiecznik
Everyday security · Poland
Zaufana Trzecia Strona
Analyses and investigations · Poland
Sekurak
Technique and vulnerabilities · Poland
CyberDefence24
Policy and regulation · Poland
Kapitan Hack
Threats to business · Poland
The Hacker News
Campaigns and vulnerabilities · World
BleepingComputer
Incidents and malware · World
Krebs on Security
Investigative journalism · World
The Record
Cyber conflict and states · World
Dark Reading
Industry analysis · World
SecurityWeek
Enterprise security · World
Schneier on Security
Cryptography and policy · World
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