Tim Kravchunovsky, founder of decentralized telecommunications network Chirp, believes that the data breach at multinational telecommunications company AT & T could have been avoided if it had stored its data on a blockchain. On July 12, AT & T said in a filing with the Securities Exchange Commission (SEC) that it learned from its investigation that the company had suffered a breach that could have endangered customer data. According to the documents, the attackers accessed and copied call logs stored in a third-party cloud provider. The data contained records of calls, text messages, and phone numbers. While the contents of the communications were not compromised, the company believes there is a way to find the names associated with the phone numbers, and that hackers could use tools to determine the identities of their customers.