This post was authored by Joseph Sirosh, Corporate Vice President, Microsoft Data Group Leveraging intelligence out of the ever-increasing amounts of data can make the difference between being the next market disruptor or being relegated to the pages of history ... continue reading

(Note: Our Tech support scams FAQ page has the latest info on this type of threat, including scammer tactics, fake error messages, and the latest scammer hotlines.) Millions of users continue to encounter technical support scams. Data from Windows Defender ... continue reading

Tax-themed scams and social engineering attacks are as certain as (death or) tax itself. Every year we see these attacks, and 2017 is no different. These attacks circulate year-round as cybercriminals take advantage of the different country and region tax ... continue reading

We are seeing a wave of new NSIS installers used in ransomware campaigns. These new installers pack significant updates, indicating a collective move by attackers to once again dodge AV detection by changing the way they package malicious code. These ... continue reading

Microsoft security researchers continue to observe ransomware campaigns blanketing the market and indiscriminately hitting potential targets. Unsurprisingly, these campaigns also continue to use email and the web as primary delivery mechanisms. Also, it appears that most corporate victims are simply ... continue reading

When a Germany-based industrial conglomerate disclosed in December 2016 that it was breached early that year, the breach was revealed to be a professionally run industrial espionage attack. According to the German press, the intruders used the Winnti family of ... continue reading

A few weeks ago, multiple organizations in the Middle East fell victim to targeted and destructive attacks that wiped data from computers, and in many cases rendering them unstable and unbootable. Destructive attacks like these have been observed repeatedly over ... continue reading

"Criminal case against you" is a message that may understandably cause panic. That’s what a recent spam campaign hopes happens, increasing the likelihood of recipients opening the malicious attachment. We recently discovered a new threat that uses email messages pretending ... continue reading

Just when it seems the Ransom:Win32/Locky activity has slowed down, our continuous monitoring of the ransomware family reveals a new workaround that the authors might be using to keep it going. The decline in Locky activity can be attributed to ... continue reading