Recently, there has been a surge in reports of violent robberies targeting cryptocurrency assets, and self managed wallets are struggling to protect personal assets in "wrench attacks" BlockBeats News: On November 26th, a home invasion robbery once again caused a sensation in the cryptocurrency field. OpenAI co-founder Sam Altman's ex boyfriend Lachy Groom was robbed by armed assailants last Saturday night, resulting in the loss of $11 million worth of cryptocurrency assets. The suspect disguised himself as a courier and entered the room, holding and assaulting the victim at gunpoint. After tying them up with tape, he cleared their encrypted account and stole their phone and computer. In addition to this case, there have been frequent reports of robbery incidents targeting encrypted assets recently, including: ·On November 22, the police in St. Petersburg, Russia arrested a man who broke into the office of a trading platform, detonated two simulated hand grenades, and ignited a smoke bomb. Subsequently, he requested the staff to transfer all encrypted assets of the trading platform to his personal wallet. Eventually failed to be arrested. ·A Hong Kong man was recently sentenced to 7 years in prison in Canada for his involvement in an extremely brutal home invasion robbery: four attackers disguised themselves as postal workers broke into a home in British Columbia, subjected a family of three to 13.5 hours of beatings, waterboarding, and sexual assault threats, and ultimately stole $1.6 million worth of Bitcoin. ·On the afternoon of November 4th, two men and three women were attacked while on their way from Oxford to London. The robber stole the watch and the victim's phone, and forced one of them to transfer the cryptocurrency in their account. In the end, he stole a watch worth 450000 pounds and 1.1 million pounds (approximately 1.44 million US dollars) of cryptocurrency. Violent robbery incidents have once again become the focus of attention in the cryptocurrency community, with Steve Krystek, CEO of personal security company PFC Guardians, stating that incidents of cryptocurrency investors being kidnapped are increasing. Some jokingly refer to this type of attack as a "wrench attack", which means that whether encryption technology can protect personal assets depends on whether the user can withstand the beating of a $5 wrench.