Search operators are special commands and symbols that help search engines understand exactly what you are looking for. The search query includes the term verified . While not a documented Yandex operator like mime: or lang: , the verified tag in this context likely indicates that Yandex's systems have performed an additional check on the results. It could be related to a safety feature, an anti-malware filter, or a flag for content that has been analyzed and deemed non-malicious. Alternatively, if used as a modifier in certain "dorks" (advanced search strings), it might be a custom parameter used by third-party tools interacting with Yandex's API.