> Interoperability vs. Security: Why not both?

An open internet where people can freely build, share, and remix each other's work is a powerful engine of grassroots innovation we’ve all benefited from. In recent decades, however, corporations have taken control of an increasing share of this work, giving them a greater ability to stifle challengers and limit our choices. When regulators address this by mandating that  tech giants play fair by requiring interoperability, the gatekeepers respond with a tired refrain: Playing fair puts users’ security at risk. Unfortunately for these trillion-dollar companies, this gotcha isn’t the end of the conversation. Regulators can ensure that meaningful choice and security thrive. Lawmakers have been catching up, recognizing that the best way to rein in big tech is to require these oligopolies to open up their platforms to independent developers. As we explained six years ago, mandating interoperability helps prevent the misuse of people’s data and enables more privacy-respecting alternatives. Tech giants, in contrast, have been arguing that our data is safer when they have exclusive control. Tech Giants Claim Interoperability Means Insecurity The European Union’s Digital Markets Act (DMA) put interoperability into law under Article 6(7): “gatekeeper shall allow providers of services and providers of hardware, free of charge, effective interoperability with” a designated Core Platform Service they operate. The language describes an unambiguous requirement to remediate vendor lockouts and anti-competitive behavior of the major service operators—it is not optional. Apple claimed that enforcing this obligation in mobile app stores would put their customers at risk and do irreparable harm to trust in their brand. It’s an argument reminiscent of Apple’s fight against the right to repair, and in both instances the company is fighting to maintain its restrictive ecosystem to stop people from finding better deals elsewhere. Apple has long cultivated a more corporate-controlled experience with the iPhone, but this argument is now also being used for the relatively-more-open Android devices from Google. In the same year Apple argued against the DMA, Epic Games sued Google for its restrictive terms of service and extractive policies for revenue generated in apps. Google predictably alleged that opening up its platform to other app stores it couldn’t vet would allow harmful apps to be installed. The case was ultimately decided this year in the U.S. federal appeals court for the Ninth Circuit, with the court rejecting this argument, dealing a blow to  Google’s feudal security arrangement, and paving the way for third-party app stores to be delivered as apps via the Google Play Store. Interoperating Secure Systems Can (and Should) Exist Policymakers cannot take tech giants’ claims at face value. Companies have every incentive to resist interoperability requirements, because interoperability lowers practical barriers and reduces switching costs for consumers adopting competing services.  Even where companies offer credible claims from internal technical and security experts, independent experts rarely have the access and information they need to test those claims. Companies have selectively made arguments that security is harmed by interoperability, often in contexts which are to their advantage. These companies are happy to let a general misconception flourish which frames security as inherently opposed to interoperability. This narrative is wrong. We’ve seen that when interoperability and information security are both set as essential and non-negotiable criteria, secure interoperable systems result—systems that don’t sacrifice the rich features we’ve come to expect of the services we rely on.  The cross-platform rollout of Rich Communication Services (RCS), and now Message Layer Security (MLS) on top of it is a perfect example of this, creating end-to-end secure messaging by default between Android and iOS. For RCS and MLS, Google was conveniently on the other side of the interoperability argument, campaigning Apple to adopt the standard to overcome the diminished “green bubble” experience iPhone users had when texting non-iPhone users. Once Apple finally agreed to interoperate by implementing common standards, all users benefited from improved messaging security. In cases where legitimate security concerns are raised, these can be assessed and remedied on a case-by-case basis, without sacrificing user agency. Striking the Right Balance Retrofitting interoperability into already secure closed systems shouldn’t be done carelessly: it requires regulators strike the right balance of pressure and leniency to allow the time and precision necessary to make these renovations. Any components developed with the assumption of privileged access by trusted parties (e.g. your browser engine) are particularly vulnerable to serious security risks when opened up to unaccountable third parties. With regard to the DMA, when security concerns are legitimate, we urge the European Commission to work with companies and outside experts to offer guidance in technical implementation and provide clarity on regulatory compliance. This approach paves a path forward that balances the interest of legal oversight and the needs of the companies alike.  Policymakers wishing to uproot these unfair platforms of control must do so with care and limit the impact this disruption can have. But security concerns must not act as a lever to indefinitely delay compliance. Closed systems should be impartially evaluated, and if concerns are valid, regulators can allow more time and guidance to be given to companies implementing these changes. One possibility is a tiered approach: offering leniency during an initial period where systems need to be retrofitted to abide by new requirements, followed by a subsequent and ongoing stricter observance of fair play. Once interoperability and information security are adopted as essential design principles, further development with these rights-enhancing principles in mind will more easily follow. The result will be an internet the world deserves—where we can expect more safety, but also more freedom.