Glossary entry

What is Sophisticated Invalid Traffic (SIVT)?

Sophisticated Invalid Traffic (SIVT) means non-human traffic produced by advanced bots, malware or click farms. It mimics genuine user activity to dodge standard detection and is commonly used in ad fraud to inflate performance stats and siphon off ad spend.

How SIVT Works

SIVT uses complex techniques to replicate human actions. Some examples are:

  • Advanced Bots: Scripts that rotate IP addresses, spoof user agents, and mimic mouse movements.
  • Click Farms: Real people paid to click ads, which makes detection much harder.
  • Ad Stacking and Pixel Stuffing: Loading several ads into one ad slot or rendering ads inside 1x1 pixel boxes.
  • Cookie Stuffing: Forcing attribution cookies onto users' browsers without them knowing.

These techniques get past basic defenses like IP blacklists and frequency capping.

Why SIVT Matters

SIVT wastes ad budgets by churning out fake impressions, clicks and conversions. It messes up campaign data, which leads to poor optimisation choices. The Interactive Advertising Bureau (IAB) reckons invalid traffic sits at 1 to 3 per cent for display ads and up to 10 per cent for video, with SIVT making up a big chunk of that. Advertisers lose billions every year to this kind of fraud.

Spotting and Stopping SIVT

Platform-level filters for invalid traffic, like Google's Active View, catch some SIVT but often miss the more tricky patterns. Third-party verification firms, such as Moat and Integral Ad Science, apply machine learning and behavioural analysis to flag suspicious activity. Key defences include:

  • Pre-bid filtering in real-time bidding (RTB).
  • Post-bid analysis with honeypots and device fingerprinting.
  • Human checks on suspicious traffic patterns.

Managed third-party protection blends automated tools with expert scrutiny to cut down SIVT exposure.

SIVT versus GIVT

General Invalid Traffic (GIVT) covers non-human traffic from known data centres, bots or spiders that can be blocked using lists. SIVT is craftier, relying on residential proxies and behaviour that looks human. Blocking GIVT is simpler, but SIVT needs more advanced detection.

How Unled Network can help

Unled's managed click fraud protection stops bots, click farms and competitor fraud on Google, Meta and Microsoft Ads, including Performance Max, and recovers wasted spend through invalid-traffic refund disputes. Pair it with DDoS Protection for full edge defence.

Frequently asked questions

What sets SIVT apart from GIVT?

GIVT (General Invalid Traffic) originates from known sources such as data centres and can be filtered via lists. SIVT uses sophisticated tricks to imitate real users, so it's much harder to spot.

How much advertising spend gets lost to SIVT?

Industry estimates vary, but invalid traffic including SIVT is thought to make up 1 to 10% of digital ad spend, costing billions every year.

Can filters at the platform level stop SIVT?

Platform filters do catch some SIVT, but they tend to miss the more advanced patterns. For thorough detection, third-party verification tools are the best bet.

What are typical SIVT methods?

Typical methods include advanced bots, click farms, ad stacking, pixel stuffing and cookie stuffing.