CYREN Security Blog




Ransomware — Protect Yourself or Pay

by Dan Maier

Filed under Email Security, Phishing, Ransomware, Web Security.

Ransomware has surged dramatically this year with the launch of a new variant called “Locky.” Delivered via massive malicious spam blasts (malspam), Locky represented 40% of all malware distributed worldwide during the first quarter of 2016.

And as these attacks have become more sophisticated, attackers are increasingly targeting businesses and organizations that have deeper pockets. So far, law enforcement has been helpless to stop these threats, IT teams are struggling and failing to protect their organizations, and attackers are raking in the money.

Virus Bulletin: Keeping Up with the Stegoloader Trojan

by John Callon

Filed under Anti-Malware, Malware Analysis, Security Research & Analysis.

As CYREN’s GlobalView security cloud churns through billions of pieces of information every day, our researchers are busy examining how certain threats work in order to make the whole automated system continuously smarter.

Certain threats we find represent marked “advances" in intrusion techniques. A deep dive on the mechanics of one notable recent “advance" was published today by Virus Bulletin. Lordian Mosuela, one of our anti-malware experts, walks through a new development in the notorious history of the Stegoloader trojan, which was initially detected by CYREN last year as W32/Gatak and is used principally as a distribution vehicle for malware which steals sensitive information or installs the scourge of the moment, ransomware. 


Malware Newsmakers of 2015

by Avi Turiel

Filed under Malware Analysis, Security Research & Analysis.

New and Old Malware are Showing Increasing Sophistication - Further Insights from CYREN's 2016 Cyberthreat Report

With as many as one million new malware threats being released each day, it comes as no surprise that many of these viruses are advanced and targeted. CYREN examined the various malware threats that appeared during 2015 and discovered some interesting trends, some new creations, and a few fashion makeovers.

CYREN's 2016 Cyberthreat Report: Malware Increases - But Phishing Explodes

by Simone Leyendecker

Filed under Email Security, Malware Analysis, Phishing, Security Research & Analysis, Spam.

The statistics about Android, phishing, malware and spam, published in CYREN's 2016 Cyberthreat Report, show a 55% annual increase in phishing and a steady upswing for malware in 2015. CYREN tracked 3.96 million active phishing URLs in 2015.

Not an April Fools’ Day Joke: Locky Ransomware

by Maharlito Aquino

Filed under Anti-Malware, Malware Analysis, Security Research & Analysis.

Locky is a new form of ransomware which has made headlines by holding three hospitals’ data hostage recently and encrypts a broad range of document and media formats before displaying ransom screens to infected users with payment instructions. A typical decrypt ransom is around $200 per infected system, with the Hollywood Presbyterian Medical Center in Los Angeles paying the equivalent of $17,000 in Bitcoin.