Hospitals have stopped diverting patients following last week's cyber attack which crippled many NHS Trusts' IT systems.
Around a fifth of NHS trusts were hit in the attack, forcing them to postpone operations and procedures over the weekend.
An NHS IT worker told the Guardian that users experienced a "bitcoin virus pop-up", demanding payment before they could access their PCs.
Large swathes of the NHS have been paralysed by the cyber attack, which hit 200,000 victims in 150 countries around the world.
Bossert will also be searching for who is responsible for the first wave of ransomware attacks as well as those involved in a possible second wave.
The healthcare system in the United Kingdom is reeling from a ransomware attack.
A large-scale worldwide investigation has been launched as police attempt to identify the perpetrators of the attack.
Barts Health, which runs the hospital, was among a fifth of the country's NHS trusts to have its computers infected by ransomware.
A COMMUNITY health service is operating normally after concerns it had been impacted by a cyber attack which has affected the NHS.
Scottish health secretary Shona Robison confirmed that there has been no evidence that patient data has been compromised and patient services, including emergency service, are continuing to operate across Scotland.
Cyber security experts have said the majority of the attacks targeted Russia, Ukraine and Taiwan.
Acute hospitals in Lanarkshire were affected, as were GP surgeries and dental practices.
"All GUM & HIV appointments today have been cancelled and patients contacted directly".
"In addition to protective real-time monitoring of national NHS IT services and systems, which were unaffected by this issue, we are supporting NHS organisations by undertaking cyber security testing and providing bespoke advice and action points".
Accident and emergency units in England were almost back to normal yesterday, the National Health Service (NHS) said, after the last restrictions put in place following the global cyber attack were lifted.
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