NI number breach.....

Hello, via my workplace Sage system it appears my account has been hacked and whoever has completed this hack has accessed my personal data which includes all payroll info and more importantly my NI number.... I've been informed today that this has happened and it was over 2 weeks ago that it was hacked. What should I do? should I contact HMRC to log this as I'm reading horror stories of what is happening when NI numbers have been stolen but to my knowledge nothing has been done with mine as of yet.

Hi Larry, just so you know I'm also having this exact same issue with Sage being accessed by third party and also would like to know what the best course of action would be.

Hi Larry P,
HMRC have measures in place to make sure your National Insurance account and personal information is safe and secure. 
As a precaution please call our National Insurance Enquiry helpline to report the incident.
Number  0300 200 3500
Text Relay  18001 0300 200 3500 (Text Relay)
Overseas  +44 191 203 7010
Open
Monday to Friday: 8am to 6pm
Closed on Saturdays, Sundays and Bank Holidays.
Web Address
National Insurance: detailed information
Thank you.
 

Hi Chris,
HMRC has measures to keep you National Insurance Account and personal details secure.
However as a precaution, please ring our National Insurance Enquiries Helpline. An agent will ensure there has been no updates or any suspicious activity on your account.
National Insurance Enquiries helpline
Number  0300 200 3500
Text Relay  18001 0300 200 3500 (Text Relay)
Overseas  +44 191 203 7010
Open Monday to Friday: 8am to 6pm
Closed on Saturdays, Sundays and Bank Holidays.
Thank you.   

It was said that HMRC take steps to prevent NI theft..YET, it is happening, I myself found out today a false building company is using my NI and reporting false payments of non-existent wages, Due to disabilities I'm currently on Universal credit, but my payment has been halved due to "apparently being paid" for work I have no knowledge of or indeed physically even able to do, to what purpose I do not know, I can only assume it's to do with either Tax fraud or working illegal immigrants, but I did find out this has been quite prominent in the news recently as NI theft...I am awaiting a decision as to whether anything will be done about this, leaving me severely out of pocket and extremely Angry, it only took me no more than 25-30 minutes to locate this "apparent company"... absolutely no contact details available what so ever(I'd say this makes it hard to gain contracts for which your apparently paying people to work for!!) no information about this BUILDING company at all, RED FLAGS all around, ...yet it's going to take UC a while to investigate, and HMRC told me they have will not take steps themselves. Yet I was under the impression this is their responsibility.

Hi Mandy I am currently facing the same problem, earnings have been declared to UC, now they have deducted from my benefit, same as yourself, I'm disabled, and is a building company with no contact numbers at all. What happened to yourself Thanks Lisa Higgins

I have had a similar experience to Mandy. Also a building company and when I looked it up the company was in Alberta. I’ve been so ill since last November I certainly wasn’t flying to Alberta earlier in this year for a months work. I’m very concerned that someone has my NI number but not sure where to go to get help.

Hi Vanessa Hall,
Our previous advice remains.
HMRC has measures to keep you National Insurance Account and personal details secure.
However as a precaution, please contact our National Insurance team and an agent will ensure there has been no updates or any suspicious activity on your account.
National Insurance: general enquiries
Thank you.