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Microsoft to Block Emails With 550 5.7.15 Access denied Error

In a notable development that will affect numerous businesses globally, Microsoft has announced that it will commence the rejection of emails that do not adhere to strict authentication standards, resulting in the error code “550 5.7.15 Access denied.” This enforcement,…

Signal Version Used In National Security Scandal Has Flaws

Cybersecurity Today: Disney Data Theft, Signal Gate, and Major Apple Vulnerability In this episode of Cybersecurity Today, host David Shipley discusses several key security incidents. Hacker ‘Null Bulge,’ real name Ryan Kramer, pleads guilty to stealing over 1.1 TB of…

New Cyber threats emerge from Cyber Attacks on UK Companies

Over the past two weeks, media outlets have been rife with speculations about a significant cyber attack affecting three major UK-based companies: Marks & Spencer, Harrods, and Co-Op. Reports suggest that cybercriminals infiltrated these organizations, resulting in severe data breaches…

Vodafone warnt Handykunden bei Betrugsanrufen

Vodafone führt einen “Spam Warner” ein, der vor betrügerischen Anrufen etwa aus dem Ausland warnen soll. Dieser Artikel wurde indexiert von heise security News Lesen Sie den originalen Artikel: Vodafone warnt Handykunden bei Betrugsanrufen

NCSC Warns of Ransomware Attacks Targeting UK Organisations

National Cyber Security Centre (NCSC) has issued technical guidance following a series of cyber attacks targeting UK retailers. These incidents have prompted concerns about the evolving threat landscape, particularly regarding ransomware and data extortion techniques. The NCSC’s National Resilience Director,…

How OSINT supports financial crime investigations

In this Help Net Security interview, Stuart Clarke, CEO at Blackdot Solutions, discusses the strategic use of open-source intelligence (OSINT) in tackling financial crime. He outlines its application in areas such as fraud, sanctions evasion, and money laundering, and addresses…

IT Security News Hourly Summary 2025-05-05 06h : 4 posts

4 posts were published in the last hour 4:2 : ISC Stormcast For Monday, May 5th, 2025 https://isc.sans.edu/podcastdetail/9436, (Mon, May 5th) 4:2 : India’s chipmaking ambitions hurt by Zoho’s no-go and Adani unease 4:2 : Ransomware spike exposes cracks in…