Chinese cyber-espionage group, Salt Typhoon, has infiltrated a ninth American telecom provider. Several hundred companies have been alerted to potential breach, with political figures among the targets. AT&T, Verizon and T-Mobile indicated their systems are now secured. Meanwhile, the US is formulating further responses to the attacks, including strengthening cybersecurity prerequisites in federal contracts. The Department of Health is set to enforce cybersecurity regulations requiring the encryption, threat-monitoring and compliance checking of data. Furthermore, the UN General Assembly has approved a cybercrime treaty to improve international standards and responses to hackers.

M&S still rebuilding after April cyber incident – Digital Watch Observatory
Summarize this content to a maximum of 60 words: M&S still rebuilding after April cyber incident Digital Watch Observatory