South African crypto exchanges are reviewing their security measures following the massive $1.5 billion hack at Bybit.Bybit, the world's second-largest exchange, fell victim to a highly sophisticated attack while moving funds between wallets.Over 400,000 ethereum and stETH were stolen in the hack, prompting Bybit to launch a recovery program.The US Department of Justice implicated North Korea's Lazarus Group in the hack and is working to freeze the stolen funds.Industry experts emphasize the need for proactive security measures in crypto exchanges to counter evolving hacker threats.Local crypto providers like Valr and AltCoinTrader emphasize their commitment to robust security protocols and risk management.Providers like Luno and 80eight highlight their security procedures to safeguard against similar vulnerabilities and attacks.The Bybit incident underscores the importance of industry-wide collaboration and innovation to enhance security practices.Exchange CEOs commend Bybit's transparent handling of the hack and stress the community's united response to investigate the breach.Bybit's breach serves as a lesson for all exchanges to fortify security mechanisms and remain vigilant against emerging cyber threats.