UK Telecommunications (Security) Act 2021 r15: reg.15 Share information about compromises that may affect other networks, and give and request assistance

Where a compromise may cause a connected compromise in another network or service, the provider must share appropriate information with that provider, which may use it only to reduce its own risk and keep it no longer than needed. Providers must give appropriate assistance when another provider requests it in relation to such a compromise, and must themselves request assistance where necessary to reduce their own risk.