Security News

With regards your question, I'm going to answer it in a bit more depth as there is a lot many realy do not realise both from a defenders and attackers point of view. The level of the attack signal rises and the level of the signals uncorrelated with the Zero Day attack go down do not remain covery long when you can "Go back in time" repeatedly with "Collect it All" databases.

Microsoft on Friday warned of active attacks exploiting unpatched Exchange Servers carried out by multiple threat actors, as the hacking campaign is believed to have infected tens of thousands of businesses, government entities in the U.S., Asia, and Europe. A successful exploitation of the flaws allows the adversaries to break into Microsoft Exchange Servers in target environments and subsequently allow the installation of unauthorized web-based backdoors to facilitate long-term access.

A week after Microsoft warned that four zero-day flaws and three others in its Exchange Server were being actively exploited and issued out-of-band remediation, the cloudy Windows biz has delivered software fixes to address 82 other vulnerabilities as part of its monthly Patch Tuesday ritual. Microsoft says two of these vulnerabilities are publicly known and five are under active exploitation.

The European Banking Authority has confirmed it is another victim on the list of organisations affected by vulnerabilities in Microsoft Exchange. The EBA hurriedly pulled its email servers offline over the weekend as it realised that it was among the ranks of those hit by flaws in Microsoft Exchange being targeted by miscreants.

Microsoft has released security updates for Microsoft Exchange servers running unsupported Cumulative Update versions vulnerable to ProxyLogon attacks. These additional security updates are meant to be installed only on machines running Exchange Server versions not supported by the original Match 2021 security patches released a week ago, only if the admin can't find an update path to a supported version.

The European Banking Authority on Sunday said it had been a victim of a cyberattack targeting its Microsoft Exchange Servers, forcing it to temporarily take its email systems offline as a precautionary measure. "As the vulnerability is related to the EBA's email servers, access to personal data through emails held on that servers may have been obtained by the attacker," the Paris-based regulatory agency said.

Early last week, Microsoft revealed that a China-based group called Hafnium has been launching cyberattacks against organizations by exploiting four zero-day vulnerabilities in on-premises versions of its Exchange Server software. Calling this Microsoft Exchange/OWA hack a pretty elaborate attack, Michael Isbitski, Technical Evangelist at Salt Security, told TechRepublic that he suspects this will impact a lot of organizations still operating their own mail infrastructure rather than using a SaaS like Microsoft 365.

The European Banking Authority took down all email systems after their Microsoft Exchange Servers were hacked as part of the ongoing attacks targeting organizations worldwide. Last week, Microsoft patched multiple zero-day vulnerabilities affecting on-premises versions of Microsoft Exchange Server and exploited in ongoing attacks coordinated by multiple state-sponsored hacking groups.

Here's a brief timeline of what we know leading up to last week's mass-hack, when hundreds of thousands of Microsoft Exchange Server systems got compromised and seeded with a powerful backdoor Trojan horse program. Pressed for a date when it first became aware of the problem, Microsoft told KrebsOnSecurity it was initially notified "In early January." So far the earliest known report came on Jan. 5, from a principal security researcher for security testing firm DEVCORE who goes by the handle "Orange Tsai." DEVCORE is credited with reporting two of the four Exchange flaws that Microsoft patched on Mar. 2.

It is Microsoft Exchange and its drooling minion, Outlook. It's easy to get things wrong in Exchange admin.