Tips & advice

President Obama’s Twitter and Facebook accounts were briefly compromised this week - with two Tweets and one post altered to send links to video montages of terrorist attacks.

A new app, Truly.am, aims to put a stop to a fast-growing area of online fraud - online dating scams - by forcing cybercriminals to prove they are who they say they are.

An invasion of fruity posts offering miraculous weight loss flooded Facebook and Twitter accounts linked to the social sharing app Buffer - appearing on official accounts for companies such as Brussels Airlines and Startup Genome.

Attackers used a Trojan program to target a security camera system in the Carmel Tunnels toll road in Haifa, shutting down the road for hours, and causing “hundreds of thousands of dollars” in damage.

When Google’s Safe Browsing service said that programming site PHP.net was hosting and serving malware, it sparked furious discussion - but the site investigated, and has since admitted a Javascript attack, and moved to "clean" servers.

Ransomware can be among the most frightening forms of malware - suddenly, your screen is replaced by a message from the police, demanding money, or a message saying your files are lost unless you pay a ransom to unlock them. Our tips will help you fight back.

We have already discussed how a system gets infected with Win32/Nymaim ransomware. In this blog post, we reveal a new infection vector, a study of the different international locker designs and ransom prices as well as a complete technical analysis of its communication protocol.

Grand Theft Auto V sold more than $1 billion worth of units in a week - no wonder cybercriminals are tempted to cash in. A torrent offering the game on PC has been downloaded "thousands" of times, sites report.