North American players of the popular League of Legends online game are advised to change their passwords as soon as possible, as a breach of Riot Games' servers resulted in the compromise of critical account information.
Some 24,000 user accounts - but luckily no user financial information - were compromised in mass login attempts to the Club Nintendo website.
Blizzard Entertainment has acknowledged that the notification email that has been hitting users' inboxes and has been purportedly sent by the company is, in fact, a phishing attempt.
Ubisoft has begun notifying account holders of a breach that resulted in their email addresses, usernames and (encrypted) passwords being compromised.
A number of World of Warcraft players have been unpleasantly surprised this last week to find that someone has apparently broken into their accounts and bought low-level items for comparatively huge sums, leaving them with almost no digital gold.
Reading our newsletter every Monday will keep you up-to-date with security news.
Receive a daily digest of the latest security news.