The notorious Clop Ransomware group claims the hack of Harvard University and added the prestigious institute to its Tor data leak site.—————————————————————————————————————————————-The [Clop Ransomware](https://securityaffairs.com/tag/clop-ransomware) group announced the hack of the prestigious Harvard University. The cybercrime group created a page for the university on its Tor data leak site and announced it will leak the stolen data soon.’PAGE CREATED, DATA ARCHIVING IS IN PROGRESS… A TORRENT LINK WILL BE AVAILABLE SOON … !!!’ reads the announcement on its leak site.*’The company doesn’t care about its customers, it ignored their security!!!’*> :rotating_light: BREAKING: Harvard breached >>> Harvard University is listed by CL0P ransomware as a victim. >> If the alleged breach will be confirmed, the impact could be huge.[#ransomNews](https://twitter.com/hashtag/ransomNews?src=hash&ref_src=twsrc%5Etfw) [#Harvard](https://twitter.com/hashtag/Harvard?src=hash&ref_src=twsrc%5Etfw) [#databreach](https://twitter.com/hashtag/databreach?src=hash&ref_src=twsrc%5Etfw) [pic.twitter.com/gdRjttEVzL](https://t.co/gdRjttEVzL)> — ransomNews (@ransomnews) [October 11, 2025](https://twitter.com/ransomnews/status/1976909253689630849?ref_src=twsrc%5Etfw)> Harvard Univeraity has allegedly been breached by Clop Ransomware. [@Harvard](https://twitter.com/Harvard?ref_src=twsrc%5Etfw) [pic.twitter.com/OmxVULX0AS](https://t.co/OmxVULX0AS)> — Dominic Alvieri (@AlvieriD) [October 11, 2025](https://twitter.com/AlvieriD/status/1976907283054707187?ref_src=twsrc%5Etfw)Clop (aka Cl0p) is a prolific Russian-speaking ransomware-as-a-service group specializing in big-game hunting and double-extortion.The Clop ransomware group first appeared on the threat landscape around February 2019, emerging from the [TA505](https://securityaffairs.com/tag/ta505) cybercrime group, a financially motivated gang active since at least 2014.Like other Russia-based threat actors, Clop avoids targets in former Soviet countries and its malware can’t be activated on a computer that operates primarily in Russian.Operators and affiliates identify high-value targets, steal sensitive data, encrypt networks, then publish stolen files on data-leak sites to pressure victims into paying. Clop exploits zero-days and vulnerable third-party software (e.g., MOVEit, GoAnywhere, Oracle EBS), leverages initial-access brokers and automation, and uses sophisticated evasion and lateral-movement techniques to maximize impact and monetization.Clop’s victims include [Shell](https://securityaffairs.com/147545/cyber-crime/shell-clop-ransomware-attacks.html), British Airways, [Bombardier](https://securityaffairs.com/114964/cyber-crime/bombardier-security-breach-clops-ransomware.html), University of Colorado, PwC, and the BBC.The group conducted major campaigns including:* **[MOVEit Transfer](https://securityaffairs.com/wp-content/uploads/2023/06/image-17.png) (2023):** One of the largest ransomware campaigns in history, impacting **hundreds of companies worldwide**, including US and European firms, through an SQL injection zero-day (CVE-2023-34362).* **[Accellion FTA](https://securityaffairs.com/115250/data-breach/qualys-clop-ransomware.html) (2020–2021):** Exploited a zero-day in the file-transfer appliance to steal data from -~100 organizations.* **[GoAnywhere MFT](https://securityaffairs.com/142130/cyber-crime/clop-ransomware-goanywhere-mft.html) (2023):** Targeted a flaw (CVE-2023-0669) to compromise over 130 organizations.Follow me on Twitter: [@securityaffairs](https://twitter.com/securityaffairs) and [Facebook](https://www.facebook.com/sec.affairs) and [Mastodon](https://infosec.exchange/@securityaffairs)[Pierluigi Paganini](http://www.linkedin.com/pub/pierluigi-paganini/b/742/559)([SecurityAffairs](http://securityaffairs.co/wordpress/) — hacking, Harward)
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