Several (but not all) of these mods have been removed from the Steam Workshop and the author's account is currently suspended.

Harmony, Network Extensions, Traffic Manager: President Edition). 'These mods have been 'forks' (modified and reuploaded versions) of popular mods from well-known creators (e.g. 'Malicious code has been found in mods published by an author using the names Holy Water and Chaos,' a pinned post on the Cities: Skylines subreddit warns. As well as making it a core download for several other mods, it also crippled any mods not made by Chaos, forcing around 35,000 unwitting players into using more infected mods. Players who use mods to play Cities: Skylines have been warned to check their machines for malware after several popular mods have been found to include malicious code.Ī hidden auto-updater has reportedly been bundled in all the mods 'redesigned' by a modder aptly known as Chaos. Further updates to this workshop item are not possible as the account is banned and contributors are unable to update workshop items. ''Harmony (Redesigned)' has been mentioned in this context, however, the mod has not been updated since March 15th, 2021.

This bypasses the Workshop entirely, and to avoid potential abuse (such as downloading malicious software) the mod has been removed. This mod was designed to check for and install updates to mods directly from Github, making changes to existing Workshop subscriptions without the user's knowledge. 'The mod 'Update from Github' was removed shortly after appearing on the Workshop. Blocking users or creating specific restrictions for them violates the Steam Subscriber Agreement and such resulted in the mod being banned. First, it blocked a short list of Steam users from using the mod, but this was later changed to cause what appeared to be buggy gameplay. ''Network Extensions 3', the mod alleged to contain malware, was banned due to discriminating against specific Steam users. 'No keyloggers, viruses, bitcoin mining software, or similar has been found in mods on the Steam Workshop.

'The mods in question, which have been banned, are 'Network Extensions 3' and 'Update from Github'. 'We recently banned a few mods from the Cities: Skylines Workshop and want to clear up some of the misinformation surrounding these mods,' Paradox wrote. In short, the situation is not perhaps as dire as it was feared. The blog, posted via Steam, details the issues it has found with the dodgy mods in question, and thanks fans for being alert to potential issues. UPDATE 15/2/22: Cities Skylines developer Paradox has issued a statement on the weekend's warnings surrounding several mods.

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