TL;DR
This paper introduces a novel backdoor attack method that embeds secret triggers in natural-looking poisoned data, effectively fooling models while evading existing defenses.
Contribution
The authors propose a new backdoor attack that hides triggers in natural data and remains undetectable by current defense mechanisms.
Findings
The attack successfully fools models with triggers at random locations.
Models perform well on clean data despite the attack.
Existing defenses cannot reliably detect this new attack.
Abstract
With the success of deep learning algorithms in various domains, studying adversarial attacks to secure deep models in real world applications has become an important research topic. Backdoor attacks are a form of adversarial attacks on deep networks where the attacker provides poisoned data to the victim to train the model with, and then activates the attack by showing a specific small trigger pattern at the test time. Most state-of-the-art backdoor attacks either provide mislabeled poisoning data that is possible to identify by visual inspection, reveal the trigger in the poisoned data, or use noise to hide the trigger. We propose a novel form of backdoor attack where poisoned data look natural with correct labels and also more importantly, the attacker hides the trigger in the poisoned data and keeps the trigger secret until the test time. We perform an extensive study on various…
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