A wave of automated traffic now sits behind much of what looks like legitimate online activity, with bot activity estimated to make up more than half of global internet traffic. In this environment, Australian brands continue to push more money into digital channels, from search and social to connected TV, assuming existing safeguards are catching most of the waste. A new auditing platform developed by a local marketing advisory firm with support from a US analytics specialist is challenging that assumption and revealing how deeply bots are embedded across the digital supply chain.
Early trials of the auditing product with three large Australian advertisers, a national insurer, a major financial services organisation and a professional services firm, have uncovered some confronting numbers. Around 30% of their digital media budgets were effectively burned on non-human clicks, while one adtech provider delivered traffic that turned out to be entirely bot-driven. Even inventory bought through a premium local publisher was not immune, with almost a third of impressions identified as fraudulent. These results sit well above the low single digit fraud rates often cited in industry benchmarks, which suggests long held comfort levels may be based on outdated or incomplete data.
Zooming out, the financial stakes for the wider economy look significant. Online advertising spend in Australia is estimated at about $17.2 billion a year, and if even a modest share of that is being wasted on bots, the drag on growth quickly runs into billions. Some large companies reportedly invest around $2 billion a year in digital ads worldwide, and if half of that is being lost to non-human traffic, simply tightening fraud controls could free up as much as $1 billion straight to the bottom line and potentially double profit margins for businesses operating on just 3% returns. However, as artificial intelligence makes it easier to generate sophisticated fake behaviour at scale, closing these gaps becomes a moving target.
Industry groups and media agencies are now warning that relying on a single fraud prevention tool or platform is no longer enough. They argue that advertisers, agencies, adtech vendors and publishers all need to lift their standards so the media supply chain becomes more transparent, cleaner and easier to audit. Stronger verification across channels, smarter use of AI to counter AI driven fraud and more routine, independent audits look like key parts of the next phase. If that happens, marketers could gain clearer visibility of where their money actually goes, publishers could prove the value of genuine inventory and the broader digital ecosystem could move closer to a fairer, more efficient marketplace, though the tug of war with increasingly sophisticated fraudsters is unlikely to end anytime soon.
