Alphabet unit CapitalG returned for an Accel-led series D round that included Telstra, and which took the endpoint security software provider's valuation above $1bn.

US-based cloud cybersecurity software provider CrowdStrike closed a $100m series D round yesterday that included telecommunications company Telstra and CapitalG, the growth equity arm of internet and technology group Alphabet.

CapitalG, formerly known as Google Capital, was joined by venture capital firm Accel, which led the round, as well as private equity firm Warburg Pincus and VC firm March Capital Partners. The round valued CrowdStrike at more than $1bn.

CrowdStrike’s Falcon platform uses artificial intelligence and machine learning algorithms in…