Peter Gregory: ‘Clean Out Your Contact Lists’ – Contact Data Can Be Toxic. Gregory: I have been collecting contacts for decades, and theyre stored in multiple services. In Google alone, he had well over 1,000 contacts. He says law enforcement may be able to know the identity of a persons connections. Gregory says encrypted apps and your association with contacts are not the only risks related to maintaining an extensive contact list. If stored card data is compromised, it may significantly outweigh its benefit, he says.”]
Source: https://www.careersinfosecurity.com/blogs/clean-out-your-contact-lists-contact-data-be-toxic-p-3159