Paper trail to the rescue, as 6,000 U.S. made voting machines allegedly just had a massive integrity breach:

The problem stemmed from a software issue that caused machines supplied by Dominion Voting Systems to incorrectly calculate vote totals, said Jessika Padilla Rivera, the commission’s interim president.

While no one is contesting the results from the June 2 primary that correctly identify the winners, machine-reported vote counts were lower than the paper ones in some cases, and some machines reversed certain totals or reported zero votes for some candidates.

Related:

• 2019: Computer “Glitch” Blamed for Election Miscount
  

  Officials said a problem associated with new voting machines necessitated a recount by the county

• 2006: More Florida Voting Machine Hijinks
  

  Election officials say they aren’t aware of any serious voting issues… because there’s no process for poll workers to quickly report minor issues and no central database of machine problems.

• 2006: Diebold v. Felton (again)
  

  “I don’t trust that,” U.S. Rep. Bobby Rush (D-Ill.) said. “This is Chicago. This is Cook County. We created vote fraud, vote scandal and stealing votes. We created that mechanism. It became an art form.”

• 2004: Pwning Presidential Voting Machines in Ohio
  

  The system appears to have been under-built and then, as the final tally was run, it switched processing over to an unmonitored and insecure location in a different state operated by a company with a close association to the winning candidate.

• 1855: Le Marais du Cygne
  

  On March 30th thousands of proslavery militants rode into Kansas to overrun polling places and poison voting systems, stuffing ballots and terrorizing actual Kansans; a flood of proslavery Missourians ruptured the Kansas political process.