Steam was the most impersonated brand in phishing attacks during the first quarter of 2025, according to a new report from Guardio. The researchers note that the gaming platform’s surge to the top comes as “a bit of a shock.” “Historically, the spot has been dominated by the usual suspects - big tech companies like Meta, Microsoft, or even USPS,” Guardio says. “But this quarter, it’s Steam, and by a significant margin.