An anonymous reader quotes a report from ZDNet:
A Chinese software manager has been sentenced after being found guilty of stealing approximately $1 million from Huaxia Bank ATMs containing security weaknesses. The 43-year-old former manager employed in Huaxia Bank’s software and technology development center spotted a “loophole” in the bank’s core operating system which offered an unrecorded timeframe in which to make withdrawals, as reported by the South China Morning Post. Qin Qisheng realized that cash withdrawals made close to midnight were not recorded by the bank’s systems in 2016, and in the same year, began systematically abusing the glitch.
Qin wrote a number of scripts which, once implanted in the bank’s software, allowed him to probe the loophole without raising suspicion. It appears these tests were successful as the software chief then made withdrawals for over a year of between $740 and $2,965, the publication says. The money had to come from somewhere, and so Qin used a “dummy account” established by the bank for testing purposes. In total, Chinese law enforcement says that the former manager was able to steal over seven million yuan, equivalent to roughly $1 million. Huaxia Bank eventually uncovered the scheme, which Qin attempted to explain away as “internal security tests.” When it came to the money, the software manager said the funds were simply “resting” in his own account but were due to be returned to the bank.
The financial institution accepted his explanation and fixed the problem, but law enforcement didn’t and arrested him for theft in December 2018. Qin was given a jail term of ten and a half years, and on appeal, the sentence was upheld.
In seeking the unattainable, simplicity only gets in the way.
— Epigrams in Programming, ACM SIGPLAN Sept. 1982