What is adlog.vivo.com.cn? It's a subdomain operated by Vivo, the well-known electronics company. It appears to handle advertising and logging functions. While the brand behind it is legitimate, the subdomain itself shows some worrying technical signs. The SSL certificate expires in about a week, and the server still accepts outdated encryption that modern browsers have rejected since 2020. These aren't signs of a scam, but they point to a lack of attention to security maintenance. For a service that likely processes user data from Vivo devices, this is not ideal. Most reputable ad-tech services keep their certificates fresh and disable old protocols. There are no external red flags like blacklisting or malware reports, and the site has been around for years. But the absence of contact details on the subdomain and the lack of basic browser protections mean you should proceed with care. If you're a developer or user interacting with this endpoint, consider whether there's a more updated alternative or if you can verify the security posture yourself. The bottom line: adlog.vivo.com.cn is probably not a scam, but its security hygiene needs improvement.
Not sure — double-check adlog.vivo.com.cn first
In plain English
This is a subdomain of Vivo, a legitimate smartphone company, but it shows signs of neglect. The SSL certificate is about to expire and outdated encryption is still supported, which are real security concerns. If you need to use this service, make sure you're on a secure network and keep an eye on the site's maintenance status.
Where the score comes from
The site has a valid certificate that expires in just over a week and still accepts outdated encryption protocols. Combined with zero browser protections against clickjacking or other attacks, this is a noticeable gap for any site handling user data.
This is a subdomain of vivo.com.cn, a well-known global electronics brand. The parent company's identity is clear, even though this specific subdomain's WHOIS doesn’t resolve.
Clean blacklists, years of history in the Wayback Machine, and no external red flags. For a service operated by a major brand, the reputation signals are strong.
There's an about page and business disclosure, but no contact details on the homepage and no social media presence. This is mixed for a technical service, but the parent company's transparency helps.
Privacy policy and terms of service are present, along with a legal entity disclosure. That meets baseline expectations for a commercial site.
Basic setup with nginx and TLS 1.2, but no DNSSEC, no email handling, and missing security headers. It works, but isn't hardened.
What we checked
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