Cybersecurity Brief – 2025-06-21
Major Incidents or Breaches
- Iran’s state-owned TV broadcaster was hacked mid-broadcast, with programming interrupted to air protest videos against the government.
- The Taiwanese cryptocurrency exchange BitoPro attributed a cyberattack resulting in the theft of $11 million in cryptocurrency to the North Korean Lazarus Group.
- American insurance company Aflac disclosed a breach as part of a broader campaign targeting US insurance providers, with potential theft of personal data. The campaign is linked to Scattered Spider.
- A massive distributed denial-of-service (DDoS) attack peaking at 7.3 Tbps targeted a hosting provider, with Cloudflare mitigating the incident. This is the largest DDoS attack recorded to date.
- A significant data breach exposed a plain text file containing 184 million passwords for services including Google, Microsoft, and Facebook.
- Reports surfaced regarding a leak of 16 billion passwords from various data breaches, raising concerns about widespread credential exposure.
Notable Threat Actor Activity
- The Qilin ransomware group has added a “Call Lawyer” feature to its ransomware-as-a-service offering, enabling affiliates to provide legal counsel to victims as an additional pressure tactic for ransom payment.
- The Lazarus Group was linked to the BitoPro crypto heist, continuing its focus on financial sector attacks.
- Scattered Spider was identified as the actor behind the insurance sector attacks, including the breach at Aflac.
- A new campaign targeted gamers and developers by publishing over 200 trojanized GitHub repositories, masquerading as Python-based hacking tools to deliver malware.
- Threat actors are increasingly using malicious copycat repositories on GitHub as an alternative malware distribution channel, adapting to improved security in package registries.
Trends, Tools, or Tactics of Interest
- Threat actors are intensifying psychological pressure on ransomware victims by offering legal assistance, as observed in the Qilin ransomware campaign.
- DDoS attacks are reaching unprecedented scale, with the latest attack peaking at 7.3 Tbps and delivering 37.4 TB of data in under a minute.
- There is a notable increase in supply chain attacks targeting developers via open source platforms, particularly through malicious and copycat repositories on GitHub.
- Cyber operations and hacktivism are increasingly used as tools in geopolitical conflicts, as seen in the Iran state TV hack and broader commentary on cyberwarfare trends.
- The insurance sector is facing coordinated campaigns from advanced threat actors, with a focus on data theft and extortion.
Newly Discovered Vulnerabilities
- Microsoft is investigating a OneDrive issue that causes file searches to return blank or no results, affecting user accessibility.
Regulatory or Policy Developments Affecting the Security Industry
- Microsoft announced plans to periodically remove legacy drivers from the Windows Update catalog to reduce security and compatibility risks.
- AWS introduced enhanced visibility features for its core security products, aiming to provide improved threat context for cloud customers.
- Google released new enterprise-grade security features for Android device management, targeting organizational security needs.