Question $34$ Tries remaining: $3$

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Which of the following statements are true? $($More than one answer may be true$)$

Select one or more:

a$.$ Stuxnet was a computer virus developed to attack the Iranian nuclear facility at Natanz

b$.$ Stuxnet infected programmable logic controllers used to enrich uranium

c$.$ The enrichment facility at Natanz was protected from hacking by an air gap

d$.$ Stuxnet was not an especially sophisticated piece of malware

e$.$ Stuxnet used a single zero day to infect computers

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