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England and Wales decisions
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Barts Health NHS Trust v Persons Unknown [2025] EWHC 3230 (KB) (08 December 2025)
The High Court granted without-notice interim injunctions after a cyberattack on an NHS trust, aimed at preventing disclosure, further access, and misuse of exfiltrated data.
The injunctions and orders are continued as just and convenient to restrain the use or dissemination of confidential information stolen by cyber hacking, to prevent blackmail, and to protect confidentiality. The Defendants' non-engagement justifies proceeding in their absence and dealing with the application on paper. Directions for future conduct are appropriate given the circumstances.
Source excerpt
XXX v Persons Unknown [2022] EWHC 2776 (KB) (25 October 2022)
Summary judgment was granted for a permanent injunction after a ransomware attack. The court continued anonymity for the claimant and held the summary judgment hearing in public.
The High Court granted summary judgment and a final injunction after a ransomware attack, and continued anonymity to protect security-sensitive information.
Bates & Ors v the Post Office Ltd (No 6: Horizon Issues) (Rev 1) [2019] EWHC 3408 (QB) (16 December 2019)
High Court judgment in the Post Office group litigation on Horizon system reliability, holding that bugs and defects could cause branch account discrepancies.
Nintendo Co Ltd v Sky UK Ltd & Ors [2019] EWHC 2376 (Ch) (10 September 2019)
The High Court granted Nintendo a website-blocking injunction against five UK ISPs over websites selling devices that circumvent Nintendo Switch protection measures.
Clarkson Plc v Person Or Persons Unknown [2018] EWHC 417 (QB) (06 March 2018)
The High Court granted default judgment and a final injunction against persons unknown who allegedly hacked Clarkson Plc’s systems and threatened to publish confidential information.
Twentieth Century Fox Film Corporation & Ors v Sky UK Ltd & Ors [2015] EWHC 1082 (Ch) (28 April 2015)
High Court website-blocking case under s97A CDPA 1988 concerning Popcorn Time and other piracy sites. The court granted blocking relief, except the Movie Panda issue was adjourned.
The High Court held that Max Mosley’s data protection claim against Google Inc was viable and should proceed, while staying parts of the case pending other issues.
The court held Frip was not liable for Voiceflex’s invoice for fraudulent third-party calls made after hackers accessed Frip’s telephony system.
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