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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.

Passwords 119
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Warning: Hackers could take over your email account by stealing cookies, even if you have MFA

Malwarebytes

The Federal Bureau of Investigation (FBI) has issued a warning that cybercriminals are taking over email accounts via stolen session cookies, allowing them to bypass the multi-factor authentication (MFA) a user has set up. Cybercriminals could use your account to spread spam and phishing emails to your contacts.

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Chinese threat actors use Quad7 botnet in password-spray attacks

Security Affairs

Microsoft warns Chinese threat actors are using the Quad7 botnet to carry out password-spray attacks and steal credentials. Chinese threat actors use the Quad7 botnet in password-spray attacks to steal credentials, Microsoft warns. These routers are used to relay brute-force attacks on Microsoft 365 accounts.

Passwords 132
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ClickFix: How to Infect Your PC in Three Easy Steps

Krebs on Security

A clever malware deployment scheme first spotted in targeted attacks last year has now gone mainstream. This particular scam usually starts with a website popup that looks something like this: This malware attack pretends to be a CAPTCHA intended to separate humans from bots.

Phishing 264
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FBI warns of malicious free online document converters spreading malware

Security Affairs

The FBI warns of a significant increase in scams involving free online document converters to infect users with malware. The FBI warns that threat actors use malicious online document converters to steal users sensitive information and infect their systems with malware. ” reads the alert. ” continues the alert.

Malware 115
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A Day in the Life of a Prolific Voice Phishing Crew

Krebs on Security

Besieged by scammers seeking to phish user accounts over the telephone, Apple and Google frequently caution that they will never reach out unbidden to users this way. The phishers also abused legitimate Google services to send Tony an email from google.com, and to send a Google account recovery prompt to all of his signed-in devices.

Phishing 337
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Warning over free online file converters that actually install malware

Malwarebytes

Instead of converting files, the tools actually load malware onto victims computers. The FBI warned specifically about that malware leading to ransomware attacks, but we’ve also seen similar sites that install browser hijackers, adware, and potentially unwanted programs (PUPs). This is the actual malware.

Malware 139