# Ledger CTO warns crypto users about the dangers of ‘blind signing’
“# Ledger CTO warns crypto users about the dangers of ‘blind signing’ ” With the recent attack on OpenSea highlighting blockchain vulnerabilities, Charles Guillemet, the CTO of Ledger warns users about “blind signing” which he defines as “consenting a transaction to be signed blindly, without understanding what it means.” In an interview with Cointelegraph, Guillemet…