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Home Technology

How malevolent machine learning could derail AI

Donna Gilbert by Donna Gilbert
August 28, 2022
in Technology
0
How malevolent machine learning could derail AI

 

A security expert Dawn Song warns that “adversarial machine learning” could be used to reverse-engineer systems—including those used in defence.

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How malevolent machine learning could derail AI 1
That’s the warning from Dawn Song, a professor at UC Berkeley who specializes in studying the security risks involved with AI and machine learning.

Speaking at EmTech Digital, an event in San Francisco produced by MIT Technology Review, Song warned that new techniques for probing and manipulating machine-learning systems—known in the field as “adversarial machine learning” methods—could cause big problems for anyone looking to harness the power of AI in business.

Song said adversarial machine learning could be used to attack just about any system built on the technology.

“It’s a big problem,” she told the audience. “We need to come together to fix it.”

Adversarial machine learning involves experimentally feeding input into an algorithm to reveal the information it has been trained on or distorting input in a way that causes the system to misbehave. By inputting lots of images into a computer vision algorithm, for example, it is possible to reverse-engineer its functioning and ensure certain kinds of outputs, including incorrect ones.

Song presented several examples of adversarial-learning trickery that her research group has explored.

One project, conducted in collaboration with Google, involved probing machine-learning algorithms trained to generate automatic responses from e-mail messages (in this case the Enron e-mail data set). The effort showed that by creating the right messages, it is possible to have the machine model spit out sensitive data such as credit card numbers. The findings were used by Google to prevent Smart Compose, the tool that auto-generates text in Gmail, from being exploited.

Another project involved modifying road signs with a few innocuous-looking stickers to fool the computer vision systems used in many vehicles. In a video demo, Song showed how the car could be tricked into thinking that a stop sign actually says the speed limit is 45 miles per hour. This could be a huge problem for an automated driving system that relies on such information.

Adversarial machine learning is an area of growing interest for machine-learning researchers. Over the past couple of years, other research groups have shown how online machine-learning APIs can be probed and exploited to devise ways to deceive them or to reveal sensitive information.

Unsurprisingly, adversarial machine learning is also of huge interest to the defence community. With a growing number of military systems—including sensing and weapons systems—harnessing machine learning, there is huge potential for these techniques to be used both defensively and offensively.

This year, the Pentagon’s research arm, DARPA, launched a major project called Guaranteeing AI Robustness against Deception (GARD), aimed at studying adversarial machine learning. Hava Siegelmann, director of the GARD program, told MIT Technology Review recently that the goal of this project was to develop AI models that are robust in the face of a wide range of adversarial attacks, rather than simply able to defend against specific ones.

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