Opinion | Russian hacking attack shows a major flaw

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The apparent Russian hack of thousands of computer systems, including those of major government agencies and major corporations, represents a serious threat to our nation’s security. It seems obvious now that it was foolish to have so many entities dependent on software produced by one company, SolarWinds. Once some skillful intruder is able to get entry into this software, as the Russians apparently did by piggybacking on updates to the software, everyone who uses the software is vulnerable to the attack.