Companies such as Microsoft, Google, Cloudflare, Oracle, IBM, AutoCAD and others have made public statements announcing that they are “exiting the Russian market” — but simply stopping new sales of equipment without shutting off existing phones and operating systems is wholly insufficient.

Many vendors continue to allow their products to be used to help manage servers, monitor networks, secure data, build artificial intelligence and other capabilities that have clear potential to be co-opted for military purposes. These technologies are critical to Putin’s ability to damage Ukraine’s digital and physical infrastructure.

Western technology firms operate inside Russia by the rules of the Russian government.

The relatively compliant Google, which has a long history of coordination with the Russian government’s communications regulator, Roskomnadzor, is practically the only major American information platform still allowed to operate within Russia.

It has tried to operate its information platforms in a delicate balance to comply with the Russian government’s implicit rules. But now Android devices are being used on the battlefield to communicate and coordinate attacks.

The time for delicate balance is well past.

After 10 months of war, Russians are not rebelling against the Putin regime’s murderous actions, even though the costs are growing ever higher for them. Many are rejoicing in the damage done in Ukraine.

There is little hope of making Russians want to stop their aggression. What remains is to hinder their ability to continue.

As Ukrainians face a brutal winter with limited heat and power, even as they work to set up “points of invincibility” to provide refuge for the most vulnerable, the least the West can do is to stop enabling Russian aggression with Western-produced technology.

What’s needed is more comprehensive information technology sanctions that cover military-enabling technology, cyber-enabling technology and information-war-enabling technology.

Block IT services and access to stop further use by the military.

It’s imperative that the West limit Russia’s access to cloud computing resources and cloud-based data, such as commercial satellite imagery and GIS systems, and terminate all licenses and access to IT service providers such as Microsoft, Google (Cloud and Android), SAP, Oracle, IBM, Cisco and dozens of others.

It is not possible to identify all potential military-enabling uses of such technologies, so they should be blocked comprehensively. The same goes for manufacturing equipment and industrial technology, provided by Western companies, that are remotely accessible or reliant on international connectivity and communication.

Prevent Russia from using network and web-related technologies to communicate securely. We should prevent access to software and related apparatus for secure digital communications, network monitoring, proxy networks, VPN and other similar services that allow the use of digital resources remotely. This would include blocking access to services such as Cloudflare and access to patches/updates for security vulnerabilities in key network software and operating systems.

Make social platforms more accountable by requiring that data on content consumption by region, language and source be publicly available.

Require social media, digital advertising networks, and content-sharing platforms to perform stringent checks before allowing paid-content sharing and prior to allowing content to reach an audience of more than 10,000 accounts. Any platform distributing news-like content should report on key consumption metrics, so that the reach of pro-Russian versus independent news sources in each region and language can be readily ascertained.

Impose stricter controls on technology transfers to Russian companies and nationals working in Western nations.

Examples of Russian firms supplying equipment to Western governments and infrastructure persist. Stronger monitoring of these firms is crucial to better protect national security and the West’s industry and technology base.

Russian nationals working in related technology areas should be subject to “deemed export” regulations as applied to non-U.S. nationals working on any technology subject to export controls.

Russia will continue to exploit all available channels to carry out its aggression. The first step is to block Western technology from operating in Russia, until attacks on civilians and infrastructure stop, and Russians are held accountable for the committed crimes.

Anastassia Fedyk is an assistant professor at the UC Berkeley Haas School of Business. Yuriy Gorodnichenko is a professor of economics at UC Berkeley. James Hodson is chief executive of AI for Good Foundation. They are co-founders of Economists for Ukraine.