When staff at CyberKeel investigated email activity at a medium-sized shipping firm, they made a shocking discovery.
"Someone had hacked into the systems of the company and planted a small virus," explains co-founder Lars Jensen. "They would then monitor all emails to and from people in the finance department."
In World War II, the Allies employed all kinds of sneaky tricks to deceive their enemies into thinking they had more troops and weapons at their disposal than they actually had.
A British cyber-security researcher charged in the US with creating and selling malware has been allowed back online after a court appearance.
Marcus Hutchins tweeted a message of support to his followers - his first tweet since being arrested on 2 August.
The world's best-selling drone-maker is adding a privacy mode to its aircraft to prevent flight data being shared to the internet.
The announcement comes a fortnight after it emerged that the US Army had prohibited its troops from using the Chinese firm's equipment because of unspecified cyber-security concerns.
Uber has been ordered to introduce tougher measures to protect the privacy of its drivers and their customers, to settle charges brought by a regulator.
The short-term rental startup paid little attention to the world's most populous country for years. But it's now stepping up efforts to appeal to China's growing ranks of young people with money to spend on travel.
Twitter suspended nearly 377,000 accounts in the last six months of 2016 for promoting terrorism.