Hotel chain Marriott is facing a fine of £99 million over a data breach which is estimated to have affected around 339 million customers.
Microsoft has confirmed that some of its email services have been breached by hackers, with the contents of some user emails exposed by the attack.
Parenting website has Mumsnet has confirmed a technical issue caused a data breach on the site.
More than 770 million email addresses have been discovered in a database allegedly used by hackers, a security researcher has revealed.
Global hotel chain Marriott believes that more than five million unencrypted passport numbers were included among the data breach that came to light in November last year.
NHS Grampian has been issued with guidance following a data breach.
About 100 million users of question-and-answer website Quora may have had their personal information compromised following a data breach, the company said.
The Government’s cyber-security watchdog has said it is investigating how the breach of nearly 50 million Facebook accounts might have affected UK users, as it issued advice for members.
Forum website Reddit has confirmed it was the victim of a data breach which has compromised usernames, passwords and email addresses but has not confirmed the size of the breach.
Social memories app Timehop has revealed more details of the data breach that affected 21 million users, which it has now confirmed also included the dates of birth and gender of some users.
Digital bank Monzo has claimed it warned Ticketmaster in April that it may have been the victim of a cyber attack.
Security experts have urged affected users to monitor all their online accounts for signs of fraud in the wake of a data breach at Ticketmaster.
Smartphone maker OnePlus has been hit by a cyber attack affecting up to 40,000 customers and compromising their credit card information.
Photo-sharing site Imgur has confirmed it was the victim of a data breach in 2014, affecting 1.7 million users.
Investigators are working to establish how many British Uber customers had personal information hacked during a mass data breach covered up by the taxi-hailing firm.
Prelim exam papers at a North-east school have been scrapped after they were sent to pupils before the actual exam.