THE organisation behind national cybersecurity said there may yet be a second wave of attacks similar to the one which struck the NHS.

In a statement released on Monday afternoon, the National Crime Agency urged all computer users to be extra vigilant online following the WannaCry ransomware attacks, which crippled NHS systems around the region on Friday.

In a tweet today, they said: "We haven’t seen a second spike in #WannaCry #ransomware attacks, but that doesn’t mean there won’t be one."

The NCA also posted a checklist of advice for computer users.

NHS patients across the York and Scarborough area should assume appointments will go ahead as planned today, following a fightback against the international cyber attack.

But people are being warned to expect delays as the recovery process continues, and are asked to be patient with staff.

York Teaching Hospital NHS Foundation Trust said that all outpatient appointments would go ahead today at York Hospital, but psychology appointments at Bootham Chapel and Musculo-Skeletal appointments at Clifton Park had been cancelled.

It said all outpatient appointments at Selby War Memorial Hospital had been cancelled today, apart from Musculo-Skeletal appointments which would go ahead.

All appointments at St Monica's Hospital, Easingwold, Malton Hospital and Bridlington Hospital are expected to go ahead, as are all appointments at Scarborough Hospital - except DEXA scanning.

The North Yorkshire breast screening service is still suspended today at York, Helmsley, Pickering, Malton and Catterick.

Trust chief executive, Patrick Crowley, said: "Assume your appointments will go ahead. If you are waiting for a district nurse and are unsure whether they are going to turn up because of the difficulties in accessing the database please feel free to ring our single point of access number, available on our website.

"We will be communicating with people through our website, through Twitter, through Facebook, throughout the day."

A trust spokeswoman said any appointments which had to be cancelled would be re-arranged as quickly as possible and a review would be carried out today into what should happen with Tuesday's outpatient appointments.

She said all planned operations across the trust, which were cancelled over the weekend, would go ahead today.

She told how staff had worked day and night over the weekend to repair the main system and also each individual infected computer, following the ransomware attack which has hit computers all over the world. People volunteered to come in to help out over the weekend, she said.

A key priority had been ensuring that each ward with inpatients had full access to the computer system.

She said that as well as the trust’s main system, about 2,000 out of 6,000 individual computers across the trust had been infected. The remaining 4,000 were temporarily shut down by the trust to protect them from the attack.

Meanwhile, NHS Vale of York Clinical Commissioning Group said GP practices across the Vale would be open as usual today but many were still bringing their IT and clinical systems back on-line and some would not yet have full access to patient records, prescriptions, appointment systems and in some cases telephone systems.

It issued these guidelines on what patients can do to help: *If you already have a GP appointment booked for today, this will go ahead. Please do not ring your surgery to check as they will be extremely busy and attend for your appointment as normal.

* People who have GP appointments should turn up as normal unless they are contacted directly and told not to.

* If you need to book an urgent GP appointment on Monday morning, you will be able to do so but please bear with us if you have difficulty in getting through to your practice and keep trying.

* Please bear in mind that practices may be running more slowly than usual if they are unable to access some of their systems and the public are asked to be patient with staff.

* All phone lines for GP practices are working. However there is a possibility that practices that use electronic call queuing systems may be affected. In this instance patients may experience some delays in getting through. If this happens, keep trying to get through whilst NHS IT technicians work to resolve the problem.