A senior intelligence official says a cyber-war raging over Ukraine could escalate further.
There has been a sustained cyber-conflict over Ukraine which could still escalate, a senior US intelligence official has told the BBC.But Russia shouldn't be underestimated, Rob Joyce, director of cyber-security at the National Security Agency said.
Initial surprise that Russia did not launch an all-out cyber-assault to cripple Ukrainian infrastructure as the war began has been replaced by an understanding that there has been far more aggressive activity than first thought.This included Russia deploying eight or nine different viruses to wipe computer systems. On Tuesday the US, UK, EU and other nationsBut Ukraine's defences have held up relatively well, partly thanks to its experience going back years.
"Our worry is that it's a decision point," Mr Joyce said. "When that decision point happens, there certainly is capability to come after some of that infrastructure." "We all want to cheer for the people who are trying to help in this situation. But it actually is a problem," Mr Joyce said.
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