The social media firm says personal information of business advertisers' clients may be affected.
Twitter apologises for business data breach
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BBC Business News Articles
Coronavirus: Lockdown to be relaxed in England as 2m rule eased
Pubs, restaurants, hotels and hairdressers can open from 4 July in England, when social distancing rules will be eased.
‘There will be a shortage of holiday cottages’
Holiday lets and hotels, which can reopen on 4 July, say they are expecting a surge of pent-up demand.
Coronavirus: Time to order your pub round by app?
Some pubs are experimenting with an app-ordering system to help with social distancing.
Coronavirus: Shoe Zone closes stores and cuts head office jobs
The retailer paused all discretionary spending when the UK went into lockdown.
Ex-Googler becomes China’s second-richest person
Colin Huang prospered after leaving US company, thanks to his e-commerce business, Pinduoduo.
Coronavirus: House sales plummeted by 50% in May
The number of homes sold during May was half of the level seen a year earlier owing to virus restrictions.
Wirecard: Former boss arrested over €1.9bn scandal
Former chief executive Markus Braun arrested in Germany as investigators probe €1.9bn hole in accounts.
Apple makes concessions to App Store developers
The tech giant will approve bug fixes to disputed apps and let developers appeal against its rulings.
Shopping centre owner Intu braces for administration
Owner of Trafford Centre and Lakeside shopping centres appoints administrators KPMG as "contingency".
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