Retail giant Coupang data breach impacts 33.7 million customers

South Korea's largest retailer, Coupang, has suffered a data breach that exposed the personal information of 33.7 million customers. [...]

https://www.bleepingcomputer.com/news/security/retail-giant-coupang-suffers-data-breach-impacting-337-million-people/

 Microsoft says new Outlook can't open some Excel attachments

​Microsoft is working to resolve a known issue that prevents some users from opening Excel email attachments in the new Outlook client. [...]

https://www.bleepingcomputer.com/news/microsoft/microsoft-says-new-outlook-cant-open-some-excel-attachments/

 SmartTube YouTube app for Android TV breached to push malicious update

The popular open-source SmartTube YouTube client for Android TV was compromised after an attacker gained access to the developer's signing keys, leading to a malicious update being pushed to users. [...]

https://www.bleepingcomputer.com/news/security/smarttube-youtube-app-for-android-tv-breached-to-push-malicious-update/

 Glassworm malware returns in third wave of malicious VS Code packages

The Glassworm campaign, which first emerged on the OpenVSX and Microsoft Visual Studio marketplaces in October, is now in its third wave, with 24 new packages added on the two platforms. [...]

https://www.bleepingcomputer.com/news/security/glassworm-malware-returns-in-third-wave-of-malicious-vs-code-packages/

 Windows 11 KB5070311 update fixes File Explorer freezes, search issues

​​Microsoft has released the KB5070311 preview cumulative update for Windows 11 systems, which includes 49 changes, including fixes for File Explorer freezes and search issues. [...]

https://www.bleepingcomputer.com/news/microsoft/windows-11-kb5070311-update-fixes-file-explorer-freezes-search-issues/

 University of Pennsylvania confirms new data breach after Oracle hack

​The University of Pennsylvania (Penn) has confirmed a new data breach after attackers stole documents containing personal information from its Oracle E-Business Suite servers in August. [...]

https://www.bleepingcomputer.com/news/security/university-of-pennsylvania-confirms-data-theft-after-oracle-ebs-hack/

 Microsoft: KB5070311 triggers File Explorer white flash in dark mode

Microsoft has confirmed that the KB5070311 preview update is triggering bright white flashes when launching the File Explorer in dark mode on Windows 11 systems. [...]

https://www.bleepingcomputer.com/news/microsoft/microsoft-kb5070311-triggers-file-explorer-bright-white-flashes-in-dark-mode/

 Fake Calendly invites spoof top brands to hijack ad manager accounts

An ongoing phishing campaign impersonates popular brands, such as Unilever, Disney, MasterCard, LVMH, and Uber, in Calendly-themed lures to steal Google Workspace and Facebook business account credentials. [...]

https://www.bleepingcomputer.com/news/security/fake-calendly-invites-spoof-top-brands-to-hijack-ad-manager-accounts/

 Google fixes two Android zero days exploited in attacks, 107 flaws

Google has released the December 2025 Android security bulletin, addressing 107 vulnerabilities, including two flaws actively exploited in targeted attacks. [...]

https://www.bleepingcomputer.com/news/security/google-fixes-two-android-zero-days-exploited-in-attacks-107-flaws/

 North Korea lures engineers to rent identities in fake IT worker scheme

In an unprecedented intelligence operation, security researchers exposed how North Korean IT recruiters target and lure developers into renting their identities for illicit fundraising. [...]

https://www.bleepingcomputer.com/news/security/north-korea-lures-engineers-to-rent-identities-in-fake-it-worker-scheme/

 Cybercrime Goes SaaS: Renting Tools, Access, and Infrastructure

Cybercrime has fully shifted to a subscription model, with phishing kits, Telegram OTP bots, infostealer logs, and even RATs now rented like SaaS tools. Varonis explains how this "crime-as-a-service" economy lowers the barrier to entry and gives low-skill attackers on-demand access to advanced capabilities. [...]

https://www.bleepingcomputer.com/news/security/cybercrime-goes-saas-renting-tools-access-and-infrastructure/

 Microsoft Defender portal outage disrupts threat hunting alerts

Microsoft is working to mitigate an ongoing incident that has been blocking access to some Defender XDR portal capabilities for the past 10 hours. [...]

https://www.bleepingcomputer.com/news/microsoft/microsoft-defender-portal-outage-blocks-access-to-security-alerts/

 Shai-Hulud 2.0 NPM malware attack exposed up to 400,000 dev secrets

The second Shai-Hulud attack last week exposed around 400,000 raw secrets after infecting hundreds of packages in the NPM (Node Package Manager) registry and publishing stolen data in 30,000 GitHub repositories. [...]

https://www.bleepingcomputer.com/news/security/shai-hulud-20-npm-malware-attack-exposed-up-to-400-000-dev-secrets/

 ChatGPT is down worldwide, conversations dissapeared for users

OpenAI's AI-powered ChatGPT is down worldwide, and the reason is unclear. [...]

https://www.bleepingcomputer.com/news/artificial-intelligence/chatgpt-is-down-worldwide-conversations-dissapeared-for-users/

 FTC settlement requires Illuminate to delete unnecessary student data

The Federal Trade Commission (FTC) is proposing that education technology provider Illuminate Education to delete unnecessary student data and improve its security to settle allegations related to an incident in 2021 that exposed info of 10 million students. [...]

https://www.bleepingcomputer.com/news/security/ftc-settlement-requires-illuminate-to-delete-unnecessary-student-data/

 Korea arrests suspects selling intimate videos from hacked IP cameras

The Korean National Police have arrested four individuals suspected of hacking over 120,000 IP cameras across the country and then selling stolen footage to a foreign adult site. [...]

https://www.bleepingcomputer.com/news/security/korea-arrests-suspects-selling-intimate-videos-from-hacked-ip-cameras/

 University of Phoenix discloses data breach after Oracle hack

The University of Phoenix (UoPX) has joined a growing list of U.S. universities breached in a Clop data theft campaign targeting vulnerable Oracle E-Business Suite instances in August 2025. [...]

https://www.bleepingcomputer.com/news/security/university-of-phoenix-discloses-data-breach-after-oracle-hack/

 Aisuru botnet behind new record-breaking 29.7 Tbps DDoS attack

In just three months, the massive Aisuru botnet launched more than 1,300 distributed denial-of-service attacks, one of them setting a new record with a peak at 29.7 terabits per second. [...]

https://www.bleepingcomputer.com/news/security/aisuru-botnet-behind-new-record-breaking-297-tbps-ddos-attack/

 Deep dive into DragonForce ransomware and its Scattered Spider connection

DragonForce expanded its ransomware operation in 2025 by working with English-speaking hackers known for advanced social engineering and initial access. Acronis explains how the "Scattered Spider" collaboration enables coordinated, multistage intrusions across major environments. [...]

https://www.bleepingcomputer.com/news/security/deep-dive-into-dragonforce-ransomware-and-its-scattered-spider-connection/

 Microsoft "mitigates" Windows LNK flaw exploited as zero-day

Microsoft has silently "mitigated" a high-severity Windows LNK vulnerability exploited by multiple state-backed and cybercrime hacking groups in zero-day attacks. [...]

https://www.bleepingcomputer.com/news/microsoft/microsoft-mitigates-windows-lnk-flaw-exploited-as-zero-day/

 Google expands Android scam protection feature to Chase, Cash App in U.S.

Google is expanding support for its Android's in-call scam protection to multiple banks and financial applications in the United States. [...]

https://www.bleepingcomputer.com/news/security/google-expands-android-scam-protection-feature-to-chase-cash-app-in-us/