Capita PLC (LSE:CPI) expects to take a hit of £15mln to £20mln from the recent cyber attack.
The outsourcing specialist said based on its own forensic work and that of its third-party providers, that some data was leaked under the attack but amounted to less than 0.1% of its server estate.
Capita said it has taken extensive steps to recover and secure the customer, supplier and colleague data contained within the impacted server and to remediate any issues arising from the incident.
The charges comprise specialist professional fees, recovery and remediation costs and investment to reinforce cyber security.
In addition, Capita has taken further steps to ensure the integrity, safety and security of its IT infrastructure to underpin its ongoing client service commitments.
The company also updated investors on trading, reporting underlying trading remains in line with expectations.
Adjusted group revenue for Core Capita for the first four months of 2023 was up by 4.8% year-on-year with Capita Public Service up by 5.0% and Capita Experience up by 4.5%.
Sales performance has been strong over the first four months of the year with in-year-revenue wins of £449mln, up 16% on the first four months of 2022.
Broker Peel Hunt said it expects to hold its current year pre-tax profit forecast at £65.9mln.
Shares in Capita were volatile, initially rising on the news before settling down 0.25% at 34.24p.