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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 .
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 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 ...
The malware destroyed over 35,000 Saudi Aramco computers, affecting business operations for months. December 17: Computer hacker sl1nk announced that he has hacked a total of 9 countries' SCADA systems. The proof includes 6 countries: France, Norway, Russia, Spain, Sweden and the United States.
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 ...
The hafnium controversy was a debate over the possibility of 'triggering' rapid energy releases, via gamma ray emission, from a nuclear isomer of hafnium, 178m2Hf. Per event the energy release is 5 orders of magnitude (100,000 times) more energetic than in a typical chemical reaction, but 2 orders of magnitude less than a nuclear fission reaction.
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 ...
Natural hafnium ( 72 Hf) consists of five observationally stable isotopes ( 176 Hf, 177 Hf, 178 Hf, 179 Hf, and 180 Hf) and one very long-lived radioisotope, 174 Hf, with a half-life of 7.0 × 1016 years. [2] In addition, there are 34 known synthetic radioisotopes, the most stable of which is 182 Hf with a half-life of 8.9 × 106 years.
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