Telstra Ventures has invested as part of a round that boosted the data and cloud security company's overall funding to $83m.

US-based data centre and cloud security software provider VArmour secured $41m in series D funding today from investors including Telstra Ventures, the corporate venturing arm of telecommunications firm Telstra.

Telstra was joined in the round by Redline Capital, the venture capital firm funded by the founder of Russia-based investment holding company Sistema, as well as undisclosed additional investors.

Founded in 2011, VArmour provides a cybersecurity software offering used to guard data by institutions such as banks, telecoms networks, healthcare providers, retailers and government agencies.

The funding will support international expansion, which the company aims to explore through strategic partnerships in North America, Asia Pacific and Europe, Middle East and Africa (EMEA).

Mark Sherman, managing director of Telstra Ventures, said: “We are very excited to be investing in VArmour, as we believe they sit at the forefront of this rapidly growing market.

“With VArmour’s distributed security system that delivers massive scale, coverage and control that agent or traditional perimeter-based solutions cannot support, the company is in a great position to help customers realise the full potential of multi-clouds.”

VArmour has now raised $83m altogether. It secured $6m in a 2013 series A round led by Highland Capital Partners, before adding $36m from financial services firm Citi’s strategic investment unit, Citi Ventures, Menlo Ventures, Work-Bench and Columbus Nova Technology Partners across rounds in 2013 and 2014.