Surfshark started out as a VPN provider and has gradually expanded into a full security suite. The VPN itself is their bread and butter, and it's reliable enough for streaming, torrenting, and just generally hiding your IP address when you're on public WiFi. What sets them apart from the crowded VPN market is that they don't cheap out on server counts or connection speeds, and they've kept pricing competitive without feeling like you're buying something held together with digital duct tape.
They've since added CleanWeb (their adblock feature), antivirus software, and Alert, which monitors whether your email address has shown up in a data breach. The Surfshark ONE bundle ties all of this together, which is actually useful if you want one subscription covering multiple security needs rather than juggling five different services. They're not the flashiest brand in the space, and their marketing can feel a bit generic, but the software actually works and doesn't drain your battery or slow your internet to a crawl.
They're popular with people who want something straightforward and not overpriced, especially those who've got bored with free VPNs or are tired of paying Norton-level prices for antivirus software. The company is based in the British Virgin Islands, which matters to some people for privacy reasons, though they're transparent about their no-logs policy and have been audited on it.