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"Ransomware is an especially odious type of malware. The way it works is simple. Your computer will be infected with some malicious software. That software then renders your computer entirely unusable, sometimes purporting to be from local law enforcement and accusing you of committing a computer crime or viewing explicit pictures of children. It then demands monetary payment, either in the form of a ransom or a 'fine' before access to your computer is returned."

"As hospitals face a surge in patients and critical equipment shortages stemming from the coronavirus pandemic, they are increasingly becoming the target of hackers who see health care facilities as easy prey. Ransomware attacks, in which hackers lock up a network and demand payment to return access to these systems, have presented a growing threat to hospitals since January. "

"Virtually every company and organisation now has - indeed has to have - an online presence. But many still take only rudimentary cybersecurity precautions and are sitting ducks for hackers. For most of companies, that's a matter for them and their boards of directors - it's their lookout if a ransomware attack makes them insolvent."

" respite was thanks to a sloppy bit of programming from the worm's creator, who'd left a killswitch in the code: newly infected systems checked to see if a certain domain (iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com) existed before attempting to spread the infection; by registering this domain, security researchers were able to freeze the worm.The respite was thanks to a sloppy bit of programming from the worm's creator, who'd left a killswitch in the code: newly infected systems checked to see if a certain domain (iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com) existed before attempting to spread the infection; by registering this domain, security researchers were able to freeze the worm. But a day later, it's back, and this time, without the killswitch. Security researchers running honeypots have seen new infections by versions of the worm that can spread even when the iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com domain is live."

"Marcus Hutchins, the 23-year-old British security researcher who was credited with stopping the WannaCry outbreak in its tracks by discovering a hidden "kill switch" for the malware, has been arrested by the FBI over his alleged involvement in another malicious software targeting bank accounts."

"Computer security experts suggested that the crisis could reflect weaknesses in the NHS's cybersecurity. Ross Anderson, of Cambridge University, said the attack appeared to exploit a weakness in Microsoft's software that was fixed by a "critical" software patch earlier this year but which may not have been installed across NHS computers."

"Indeed, this scam is far subtler. It works like this: fraudsters are able to register domains with characters plucked from various alphabets other than the default Latin script. When displayed, it's all but impossible to tell apart a Greek "O" from a Cyrillic "O" from a Latin "O," for instance."

"In a statement, the company said: "Colonial Pipeline is taking steps to understand and resolve this issue. At this time, our primary focus is the safe and efficient restoration of our service and our efforts to return to normal operation. This process is already under way, and we are working diligently to address this matter and to minimize disruption to our customers and those who rely on Colonial Pipeline."

"JBS, the world's biggest meat processor, has paid an $11m (£7.8m) ransom after a cyber-attack shut down operations, including abattoirs in the US, Australia and Canada. While most of its operations have been restored, the Brazilian-headquartered company said it hoped the payment would head off any further complications including data theft."

"Let's say you have an IoT device that is well protected with functions that can be accessed through a well-defined API; even if you can control the device through the API, you probably can't do too much harm. Firmware, the programming inside the device has logical constraints that don't allow you, for example, to close garage doors while someone is in the way of them or overheat a device so that it combusts.  We used to trust that hardware, such as a common kitchen appliance, could be trusted and could not be easily altered without physically dismounting the device. But with today's "smart" appliances, this is no longer the case."