Promotions by fintech startup Lanistar claiming its payments cards were “the world’s most secure” were misleading and must not be made again, the Advertising Standards Authority has ruled.

Days after the ruling, however, paid promotional posts on behalf of the company have continued to spread the same claim on social media. The offending tagline also remained on the firm’s website at the time of writing on 25 May, with support posts for its products stating that its Volt payment card is “the most secure payment card ever created”.