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China Possibly Hacking US “Lawful Access” Backdoor

The Wall Street Journal is reporting that Chinese hackers (Salt Typhoon) penetrated the networks of US broadband providers, and might have accessed the backdoors that the federal government uses to execute court-authorized wiretap requests. Those backdoors have been mandated by law—CALEA—since 1994.

It’s a weird story. The first line of the article is: “A cyberattack tied to the Chinese government penetrated the networks of a swath of U.S. broadband providers.” This implies that the attack wasn’t against the broadband providers directly, but against one of the intermediary companies that sit between the government CALEA requests and the broadband providers.

For years, the security community has pushed back against these backdoors, pointing out that the technical capability cannot differentiate between good guys and bad guys. And here is one more example of a backdoor access mechanism being targeted by the “wrong” eavesdroppers.

Other news stories.

Posted on October 8, 2024 at 7:00 AMView Comments

Weird Zimbra Vulnerability

Hackers can execute commands on a remote computer by sending malformed emails to a Zimbra mail server. It’s critical, but difficult to exploit reliably.

In an email sent Wednesday afternoon, Proofpoint researcher Greg Lesnewich seemed to largely concur that the attacks weren’t likely to lead to mass infections that could install ransomware or espionage malware. The researcher provided the following details:

  • While the exploitation attempts we have observed were indiscriminate in targeting, we haven’t seen a large volume of exploitation attempts
  • Based on what we have researched and observed, exploitation of this vulnerability is very easy, but we do not have any information about how reliable the exploitation is
  • Exploitation has remained about the same since we first spotted it on Sept. 28th
  • There is a PoC available, and the exploit attempts appear opportunistic
  • Exploitation is geographically diverse and appears indiscriminate
  • The fact that the attacker is using the same server to send the exploit emails and host second-stage payloads indicates the actor does not have a distributed set of infrastructure to send exploit emails and handle infections after successful exploitation. We would expect the email server and payload servers to be different entities in a more mature operation.
  • Defenders protecting Zimbra appliances should look out for odd CC or To addresses that look malformed or contain suspicious strings, as well as logs from the Zimbra server indicating outbound connections to remote IP addresses.

Posted on October 3, 2024 at 7:04 AMView Comments

Hacking ChatGPT by Planting False Memories into Its Data

This vulnerability hacks a feature that allows ChatGPT to have long-term memory, where it uses information from past conversations to inform future conversations with that same user. A researcher found that he could use that feature to plant “false memories” into that context window that could subvert the model.

A month later, the researcher submitted a new disclosure statement. This time, he included a PoC that caused the ChatGPT app for macOS to send a verbatim copy of all user input and ChatGPT output to a server of his choice. All a target needed to do was instruct the LLM to view a web link that hosted a malicious image. From then on, all input and output to and from ChatGPT was sent to the attacker’s website.

Posted on October 1, 2024 at 7:07 AMView Comments

AI and the 2024 US Elections

For years now, AI has undermined the public’s ability to trust what it sees, hears, and reads. The Republican National Committee released a provocative ad offering an “AI-generated look into the country’s possible future if Joe Biden is re-elected,” showing apocalyptic, machine-made images of ruined cityscapes and chaos at the border. Fake robocalls purporting to be from Biden urged New Hampshire residents not to vote in the 2024 primary election. This summer, the Department of Justice cracked down on a Russian bot farm that was using AI to impersonate Americans on social media, and OpenAI disrupted an Iranian group using ChatGPT to generate fake social-media comments.

It’s not altogether clear what damage AI itself may cause, though the reasons for concern are obvious—the technology makes it easier for bad actors to construct highly persuasive and misleading content. With that risk in mind, there has been some movement toward constraining the use of AI, yet progress has been painstakingly slow in the area where it may count most: the 2024 election.

Two years ago, the Biden administration issued a blueprint for an AI Bill of Rights aiming to address “unsafe or ineffective systems,” “algorithmic discrimination,” and “abusive data practices,” among other things. Then, last year, Biden built on that document when he issued his executive order on AI. Also in 2023, Senate Majority Leader Chuck Schumer held an AI summit in Washington that included the centibillionaires Bill Gates, Mark Zuckerberg, and Elon Musk. Several weeks later, the United Kingdom hosted an international AI Safety Summit that led to the serious-sounding “Bletchley Declaration,” which urged international cooperation on AI regulation. The risks of AI fakery in elections have not sneaked up on anybody.

Yet none of this has resulted in changes that would resolve the use of AI in U.S. political campaigns. Even worse, the two federal agencies with a chance to do something about it have punted the ball, very likely until after the election.

On July 25, the Federal Communications Commission issued a proposal that would require political advertisements on TV and radio to disclose if they used AI. (The FCC has no jurisdiction over streaming, social media, or web ads.) That seems like a step forward, but there are two big problems. First, the proposed rules, even if enacted, are unlikely to take effect before early voting starts in this year’s election. Second, the proposal immediately devolved into a partisan slugfest. A Republican FCC commissioner alleged that the Democratic National Committee was orchestrating the rule change because Democrats are falling behind the GOP in using AI in elections. Plus, he argued, this was the Federal Election Commission’s job to do.

Yet last month, the FEC announced that it won’t even try making new rules against using AI to impersonate candidates in campaign ads through deepfaked audio or video. The FEC also said that it lacks the statutory authority to make rules about misrepresentations using deepfaked audio or video. And it lamented that it lacks the technical expertise to do so, anyway. Then, last week, the FEC compromised, announcing that it intends to enforce its existing rules against fraudulent misrepresentation regardless of what technology it is conducted with. Advocates for stronger rules on AI in campaign ads, such as Public Citizen, did not find this nearly sufficient, characterizing it as a “wait-and-see approach” to handling “electoral chaos.”

Perhaps this is to be expected: The freedom of speech guaranteed by the First Amendment generally permits lying in political ads. But the American public has signaled that it would like some rules governing AI’s use in campaigns. In 2023, more than half of Americans polled responded that the federal government should outlaw all uses of AI-generated content in political ads. Going further, in 2024, about half of surveyed Americans said they thought that political candidates who intentionally manipulated audio, images, or video should be prevented from holding office or removed if they had won an election. Only 4 percent thought there should be no penalty at all.

The underlying problem is that Congress has not clearly given any agency the responsibility to keep political advertisements grounded in reality, whether in response to AI or old-fashioned forms of disinformation. The Federal Trade Commission has jurisdiction over truth in advertising, but political ads are largely exempt—again, part of our First Amendment tradition. The FEC’s remit is campaign finance, but the Supreme Court has progressively stripped its authorities. Even where it could act, the commission is often stymied by political deadlock. The FCC has more evident responsibility for regulating political advertising, but only in certain media: broadcast, robocalls, text messages. Worse yet, the FCC’s rules are not exactly robust. It has actually loosened rules on political spam over time, leading to the barrage of messages many receive today. (That said, in February, the FCC did unanimously rule that robocalls using AI voice-cloning technology, like the Biden ad in New Hampshire, are already illegal under a 30-year-old law.)

It’s a fragmented system, with many important activities falling victim to gaps in statutory authority and a turf war between federal agencies. And as political campaigning has gone digital, it has entered an online space with even fewer disclosure requirements or other regulations. No one seems to agree where, or whether, AI is under any of these agencies’ jurisdictions. In the absence of broad regulation, some states have made their own decisions. In 2019, California was the first state in the nation to prohibit the use of deceptively manipulated media in elections, and has strengthened these protections with a raft of newly passed laws this fall. Nineteen states have now passed laws regulating the use of deepfakes in elections.

One problem that regulators have to contend with is the wide applicability of AI: The technology can simply be used for many different things, each one demanding its own intervention. People might accept a candidate digitally airbrushing their photo to look better, but not doing the same thing to make their opponent look worse. We’re used to getting personalized campaign messages and letters signed by the candidate; is it okay to get a robocall with a voice clone of the same politician speaking our name? And what should we make of the AI-generated campaign memes now shared by figures such as Musk and Donald Trump?

Despite the gridlock in Congress, these are issues with bipartisan interest. This makes it conceivable that something might be done, but probably not until after the 2024 election and only if legislators overcome major roadblocks. One bill under consideration, the AI Transparency in Elections Act, would instruct the FEC to require disclosure when political advertising uses media generated substantially by AI. Critics say, implausibly, that the disclosure is onerous and would increase the cost of political advertising. The Honest Ads Act would modernize campaign-finance law, extending FEC authority to definitively encompass digital advertising. However, it has languished for years because of reported opposition from the tech industry. The Protect Elections From Deceptive AI Act would ban materially deceptive AI-generated content from federal elections, as in California and other states. These are promising proposals, but libertarian and civil-liberties groups are already signaling challenges to all of these on First Amendment grounds. And, vexingly, at least one FEC commissioner has directly cited congressional consideration of some of these bills as a reason for his agency not to act on AI in the meantime.

One group that benefits from all this confusion: tech platforms. When few or no evident rules govern political expenditures online and uses of new technologies like AI, tech companies have maximum latitude to sell ads, services, and personal data to campaigns. This is reflected in their lobbying efforts, as well as the voluntary policy restraints they occasionally trumpet to convince the public they don’t need greater regulation.

Big Tech has demonstrated that it will uphold these voluntary pledges only if they benefit the industry. Facebook once, briefly, banned political advertising on its platform. No longer; now it even allows ads that baselessly deny the outcome of the 2020 presidential election. OpenAI’s policies have long prohibited political campaigns from using ChatGPT, but those restrictions are trivial to evade. Several companies have volunteered to add watermarks to AI-generated content, but they are easily circumvented. Watermarks might even make disinformation worse by giving the false impression that non-watermarked images are legitimate.

This important public policy should not be left to corporations, yet Congress seems resigned not to act before the election. Schumer hinted to NBC News in August that Congress may try to attach deepfake regulations to must-pass funding or defense bills this month to ensure that they become law before the election. More recently, he has pointed to the need for action “beyond the 2024 election.”

The three bills listed above are worthwhile, but they are just a start. The FEC and FCC should not be left to snipe with each other about what territory belongs to which agency. And the FEC needs more significant, structural reform to reduce partisan gridlock and enable it to get more done. We also need transparency into and governance of the algorithmic amplification of misinformation on social-media platforms. That requires that the pervasive influence of tech companies and their billionaire investors should be limited through stronger lobbying and campaign-finance protections.

Our regulation of electioneering never caught up to AOL, let alone social media and AI. And deceiving videos harm our democratic process, whether they are created by AI or actors on a soundstage. But the urgent concern over AI should be harnessed to advance legislative reform. Congress needs to do more than stick a few fingers in the dike to control the coming tide of election disinformation. It needs to act more boldly to reshape the landscape of regulation for political campaigning.

This essay was written with Nathan E. Sanders, and originally appeared in the Atlantic.

Posted on September 30, 2024 at 7:00 AMView Comments

NIST Recommends Some Common-Sense Password Rules

NIST’s second draft of its “SP 800-63-4“—its digital identify guidelines—finally contains some really good rules about passwords:

The following requirements apply to passwords:

  1. lVerifiers and CSPs SHALL require passwords to be a minimum of eight characters in length and SHOULD require passwords to be a minimum of 15 characters in length.
  2. Verifiers and CSPs SHOULD permit a maximum password length of at least 64 characters.
  3. Verifiers and CSPs SHOULD accept all printing ASCII [RFC20] characters and the space character in passwords.
  4. Verifiers and CSPs SHOULD accept Unicode [ISO/ISC 10646] characters in passwords. Each Unicode code point SHALL be counted as a signgle character when evaluating password length.
  5. Verifiers and CSPs SHALL NOT impose other composition rules (e.g., requiring mixtures of different character types) for passwords.
  6. Verifiers and CSPs SHALL NOT require users to change passwords periodically. However, verifiers SHALL force a change if there is evidence of compromise of the authenticator.
  7. Verifiers and CSPs SHALL NOT permit the subscriber to store a hint that is accessible to an unauthenticated claimant.
  8. Verifiers and CSPs SHALL NOT prompt subscribers to use knowledge-based authentication (KBA) (e.g., “What was the name of your first pet?”) or security questions when choosing passwords.
  9. Verifiers SHALL verify the entire submitted password (i.e., not truncate it).

Hooray.

News article. Slashdot thread.

EDITED TO ADD (10/13): There are potential security issues with allowing arbitrary Unicode in passwords.

Posted on September 27, 2024 at 7:01 AMView Comments

Sidebar photo of Bruce Schneier by Joe MacInnis.