(Bloomberg) -- Call it the flight to cyber-safety.

After a wave of global online attacks over the weekend,companies such as FireEye that provide software security services gained Monday on speculationthe exposed weaknesses may trigger a surge in securityspending.

The $967 million PureFunds ISE Cyber Security ETF, or HACK, jumped the most in sixmonths.

The malware unleashed late last week used a techniquepurportedly stolen from the U.S. National Security Agency. It’saffecting companies including FedEx Corp. and government agencieslike the U.K.’s National Health Service.

More than 200,000 computers in at least 150 countries have beeninfected, according to Europol, the European Union’s lawenforcement agency.

Last Thursday, President Donald Trump signed an executive orderto focus attention on cybersecurity improvements. Along with theattack, “we see both of these events as incrementally positive forcybersecurity spend,” Pierre Ferragu, an analyst at Sanford C.Bernstein & Co., wrote in a note Monday. “The opinion ofenterprise decision makers is heavily influenced by such events,and this one is likely to support spending decisions.”

The HACK fund has benefited before from headline-grabbing onlinecrime. The PureFunds ETF had one of the most successful debuts inhistory after investors poured $1.4 billion into the fund followinga breach at Sony Pictures Entertainment.

On Monday, the fund gained 3.2 percent to $30.69, the highest inalmost two years, as of 10:03 a.m. in New York. FireEye -- thestock with the biggest weighting in HACK -- gained 6.8 percent.

The ransomware used by hackers encrypted files within affectedcomputers, making them inaccessible, and demanded ransom --typically $300 in bitcoin.

After the first wave of attacks on Friday, bitcoin fell 7.1 percent,its biggest slide in almost two months. The digital currency paredsome of those losses Monday, gaining 3.2 percent.

U.K. health care services were among those hit, as health stocksdipped 0.8 percent during Monday trading.

Yet losses were minimized as government agencies began to gainthe upper hand. About 97 percent of U.K. facilities and doctorsdisabled by the attack were back to normal operation, U.K. HomeSecretary Amber Rudd said Saturday after a government meeting.

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