Ransomware 1H 2017 review: Global outbreaks reinforce the value of security hygiene

In the first six months of 2017, ransomware threats reached new levels of sophistication. The same period also saw the reversal of a six-month downward trend in ransomware encounters. New ransomware code was released at a higher rate with increasing complexity. Two high-profile ransomware incidents brought cybersecurity to the forefront of mainstream conversations as the…


Links in phishing-like emails lead to tech support scam

Tech support scams continue to evolve, with scammers exploring more ways to reach potential victims. Recently, we have observed spam campaigns distributing links that lead to tech support scam websites. Anti-spam filters in Microsoft Exchange Online Protection (EOP) for Office 365 and in Outlook.com blocked the said emails because they bore characteristics of phishing emails….

7

Windows Defender Antivirus cloud protection service: Advanced real-time defense against never-before-seen malware

For cybercriminals, speed is the name of the game. It takes newly released malware an average of just four hours to achieve its goal—steal financial information, extort money, or cause widespread damage. In a recent report, the Federal Trade Commission (FTC) said that cybercriminals will use hacked or stolen information within nine minutes of posting in…

19

Understanding the true size of “Fireball”

Keeping tabs on the movement of cybersecurity threats, understanding the size and scope of attacks, and disrupting cybercriminal campaigns through next-gen technologies are fundamental parts of our day-to-day work at Microsoft Windows Defender Research. So when recent reports of the “Fireball” cybersecurity threat operation were presented as a new discovery, our teams knew differently because…

0

Partnering with the AV ecosystem to protect our Windows 10 customers

On Friday May 12th, and for several days afterwards, more than a quarter-million computers around the world fell victim to the ransomware known as WannaCrypt or WannaCry. As that recent event has shown, malicious actors bring nearly boundless time and skill to commit cybercrime that can cause harm to millions of people. That is why…

4

Windows 10 Creators Update provides next-gen ransomware protection

Multiple high-profile incidents have demonstrated that ransomware can have catastrophic effects on all of us. From personally losing access to your own digital property, to being impacted because critical infrastructure or health care services are unexpectedly unavailable for extended periods of time, destructive attacks have grown in severity and scale on all platforms – including…


Tax-themed phishing and malware attacks proliferate during the tax filing season

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 schedules, but they peak in the months leading to U.S. Tax Day in mid-April. The U.S. Internal Revenue Service last…

0

Ransomware operators are hiding malware deeper in installer packages

(Note: Read our latest comprehensive report on ransomware: Ransomware 1H 2017 review: Global outbreaks reinforce the value of security hygiene.)   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…

2

Uncovering cross-process injection with Windows Defender ATP

Windows Defender Advanced Threat Protection (Windows Defender ATP) is a post-breach solution that alerts security operations (SecOps) personnel about hostile activity. As the nature of attacks evolve, Windows Defender ATP must advance so that it continues to help SecOps personnel uncover and address the attacks. With increasing security investments from Microsoft—read how Windows 10 continues to raise…

3

Breaking down a notably sophisticated tech support scam M.O.

(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.)   The cornerstone of tech support scams is the deception that there is something wrong with your PC.  To advance this sham, tech support scams have long abused…

43