The Scottish Parliament is in the middle of a "brute force" cyber attack, it has said.

The problems are expected to last several days, they have said. It is an echo of the attack that hit the Westminster Parliament and caused similarly lengthy problems for London MPs.

Attackers appear to be trying to get into email and internet accounts of politicians, according to parliamentary officials. Though that hasn't worked, people are getting locked out of their accounts as a security procedure.

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Systems have not yet been breached, authorities have announced.

Parliament chief executive Sir Paul Grice told MSPs and staff on Wednesday that the systems remain under attack but there is no indication that defences have been breached.

He said parliamentary staff are working with the National Cyber Security Centre (NCSC) to contain the attack and security measures put in place so far have seen account lock-outs decrease.

In an email, he said: "At this point there is no evidence to suggest that the attack has breached our defences and our IT systems continue to be fully operational. Users should be aware, however, that this attack remains ongoing."

He said it is "not uncommon for brute force attacks to be sustained over a period of days", and he urged users to remain vigilant.

Sir Paul added: "Staff from the BIT (Business Information Technology) Office are working closely with the NCSC and our suppliers to put in place additional security measures to continue to contain the incident and mitigate against any future attacks. In addition, analysis is taking place to better understand the origin of the attack and to assess its overall impact."

Countries in Europe and elsewhere where the attack was routed through have been identified but the Parliament has declined to list them as they do not confirm where it originated.

The campaign is thought to be similar to an attack on Westminster in June which lasted four days.