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A large botnet targets M365 accounts with password spraying attacks

Security Affairs

A botnet of 130,000+ devices is attacking Microsoft 365 accounts via password-spraying, bypassing MFA by exploiting basic authentication. SecurityScorecard researchers discovered a botnet of over 130,000 devices that is conducting password-spray attacks against Microsoft 365 (M365) accounts worldwide. ” concludes the report.

Passwords 118
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Change Healthcare Breach Hits 100M Americans

Krebs on Security

The chief information security officer for a large academic healthcare system affected by the breach told KrebsOnSecurity they participated in a call with the FBI and were told a third party partner managed to recover at least four terabytes of data that was exfiltrated from Change by the cybercriminal group. .”

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Battle with Bots Prompts Mass Purge of Amazon, Apple Employee Accounts on LinkedIn

Krebs on Security

On October 10, 2022, there were 576,562 LinkedIn accounts that listed their current employer as Apple Inc. LinkedIn declined to answer questions about the account purges, saying only that the company is constantly working to keep the platform free of fake accounts. The next day, half of those profiles no longer existed.

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10 Benefits of Leading a Cybersecurity Management Review

SecureWorld News

I just wrapped up a management review for our cybersecurity program (which is called an Information Security Management System (ISMS) in ISO 27001), and it got me thinking about how valuable these reviews are—not just for meeting compliance requirements like ISO 27001, but for driving real improvements in how we approach cybersecurity.

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New SEC Rules around Cybersecurity Incident Disclosures

Schneier on Security

The US Securities and Exchange Commission adopted final rules around the disclosure of cybersecurity incidents. There are two basic rules: Public companies must “disclose any cybersecurity incident they determine to be material” within four days, with potential delays if there is a national security risk.

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DeepSeek and AI-Generated Malware Pose New Danger for Cybersecurity

SecureWorld News

The rapid advancement of generative AI has brought both innovation and concern to the cybersecurity landscape. While the AI-generated malware required manual debugging to function properly, its mere existence signals an urgent need for security teams to adapt their defenses.

Malware 106
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BlackLock Ransomware Targeted by Cybersecurity Firm

Security Affairs

Cybersecurity experts were able to exploit misconfiguration in vulnerable web-app used by ransomware operators to publish victims data – leading to clearnet IP addresses disclosure related to their network infrastructure behind TOR hidden services (hosting them) and additional service information acquired from server-side.