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The first breach of a Microsoft Exchange Server instance was observed by cybersecurity company Volexity on 6 January 2021. [1] By the end of January, Volexity had observed a breach allowing attackers to spy on two of their customers, and alerted Microsoft to the vulnerability. After Microsoft was alerted of the breach, Volexity noted the ...
Hafnium (sometimes styled HAFNIUM; also called Silk Typhoon by Microsoft) is a cyber espionage group, sometimes known as an advanced persistent threat, with alleged ties to the Chinese government. [2] [3] [4] Hafnium is closely connected to APT40 .
Exchange Web Services (EWS), an alternative to the MAPI protocol, is a documented SOAP -based protocol introduced with Exchange Server 2007. Exchange Web Services is used by the latest version of Microsoft Entourage for Mac and Microsoft Outlook for Mac - since the release of Mac OS X Snow Leopard Mac computers running OS X include some support ...
Hafnium is a shiny, silvery, ductile metal that is corrosion -resistant and chemically similar to zirconium [13] in that they have the same number of valence electrons and are in the same group. Also, their relativistic effects are similar: The expected expansion of atomic radii from period 5 to 6 is almost exactly canceled out by the ...
History of Microsoft Exchange Server. The first release of Microsoft Exchange Server was version 4.0 in April 1996, when it was sold as an upgrade to Microsoft Mail 3.5. Before that, Microsoft Mail v2.0 (written by Microsoft) was replaced in 1991 by "Microsoft Mail for PC Networks v2.1", [1] based on Network Courier from its acquisition of ...
The hafnium nitrides are the various salts produced from combining hafnium and nitrogen. The two most important such are hafnium (III) nitride, HfN; and hafnium (IV) nitride, Hf 3 N 4. None can be prepared from hafnium oxide, but must instead be prepared from the elemental metal or a different hafnium nitride salt; attempted nitridation of the ...
Hafnium carbide (Hf C) is a chemical compound of hafnium and carbon. Previously the material was estimated to have a melting point of about 3,900 °C. [2] More recent tests have been able to conclusively prove that the substance has an even higher melting point of 3,958 °C exceeding those of tantalum carbide and tantalum hafnium carbide which ...
An advanced persistent threat ( APT) is a stealthy threat actor, typically a state or state-sponsored group, which gains unauthorized access to a computer network and remains undetected for an extended period. [1] [2] In recent times, the term may also refer to non-state-sponsored groups conducting large-scale targeted intrusions for specific ...