Cybersecurity and data protection platform provider enSilo announced it closed on a second tranche of $19 million Series A financing, bringing its total funding up to $21 million. Around $9 million of that funding was led by Rembrandt Venture Partners alongside Carmel Ventures and Lightspeed Venture Partners, who were previous investors.

The security startup’s growth comes on the heels of its discovery of a critical flaw in antivirus McAfee, Kaspersky’s AVG Internet Security platforms.