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Authentication and the Have I Been Pwned API

Troy Hunt

The very first feature I added to Have I Been Pwned after I launched it back in December 2013 was the public API. I highlighted 3 really important attributes at the time of launch: There is no authentication. In the end, the path forward was clear - the API would need to be authenticated. There is no rate limiting.

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OpenSSH bugs allows Man-in-the-Middle and DoS Attacks

Security Affairs

The second vulnerability, tracked CVE-2025-26466 (CVSS score: 5.9), affects both the OpenSSH client and server, allowing a pre-authentication denial-of-service attack. Introduced in December 2014 (OpenSSH 6.8p1), this flaw remained active, with FreeBSD enabling VerifyHostKeyDNS by default from 2013 to 2023, increasing exposure.

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The ticking time bomb of Microsoft Exchange Server 2013

DoublePulsar

I’ve discovered two organisations with ransomware incidents, where the entry point appears to have been Exchange Server 2013 with Outlook Web Access enabled, where all available security updates were applied. But since there were a range of post authentication Exchange Server vulnerabilities this year ( link ), I doubt it is a zero day.

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CISA Urges Exchange Online Authentication Update

eSecurity Planet

CISA noted that Basic authentication is simple and pretty convenient but unsecured by design. And it’s incompatible with multi-factor authentication (MFA) systems , so admins might be discouraged from enabling it. or Microsoft Active Directory Authentication Library uses tokens that expire quickly and cannot be reused elsewhere.

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SHARED INTEL: Coming very soon — ‘passwordless authentication’ as a de facto security practice

The Last Watchdog

As a tradeoff for enjoying our digital lives, we’ve learned to live with password overload and even tolerate two-factor authentication. I had a chance to discuss this seminal transition with George Avetisov, co-founder and chief executive officer of HYPR , a Manhattan-based supplier of advanced authentication technologies.

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XE Group shifts from credit card skimming to exploiting zero-days

Security Affairs

Active since at least 2013 , XE Group is a cybercriminal group focused on credit card skimming and password theft via supply chain attacks. CVE-2024-57968 allows remote authenticated users to upload files to unintended folders, while CVE-2025-25181 is an SQL injection flaw enabling remote SQL execution (no patch available).

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Hacked Data Broker Accounts Fueled Phony COVID Loans, Unemployment Claims

Krebs on Security

Dubner said all customers are required to use multi-factor authentication, and that everyone applying for access to its services undergoes a rigorous vetting process. In 2013, KrebsOnSecurity broke the news that the U.S. Also in 2013, KrebsOnSecurity broke the news that ssndob[.]ms