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Chypothermia: Clock Freezing for Static Side-channel Attacks

Chypothermia attack uses cryogenic cooling to disable clock and voltage sensors, evading detection and blocking key zeroization on OpenTitan root of trust.

Chypothermia is a static side-channel attack that exposes chips to cryogenic temperatures, disrupting on-chip mixed-signal components to disable the clock sensor, clock generation circuit, and voltage sensors without electrical tampering. Combined with Chypnosis (IEEE S&P 2026), it halts the clock while evading temperature-based anomaly detection. It was implemented on multiple FPGA/SoC platforms and applied to the OpenTitan root of trust's alert handler, evading detection and preventing key zeroization. The authors also propose an FPGA-compatible self-heating sensor as a countermeasure.

arXiv cs.CR · 6d agoResearch

A bold new strategy or a dangerous precedent? Experts are divided on Trump's memo.

Trump presidential memorandum authorizes private-sector companies to conduct federally supervised hacking operations against transnational criminal organizations.

A newly signed presidential memorandum enlists private companies in federal law enforcement hacking operations aimed at transnational criminal organizations, with a 60-day window to establish the program. Experts told CyberScoop the shift raises attribution, targeting and constitutional questions, including risks of private firms accidentally attacking foreign governments and procedures for prior approval before targeting US persons. Critics likened the approach to historical letters of marque, while supporters including NSC cyber policy director Amanda Naylor framed it as bringing private-sector speed to the fight against cybercrime and fraud.

CyberScoop · Aug 13, 2026Policy & legal

Analog Pin Directionality as an Exfiltration Attack Surface in Mixed-Signal ICs

Researchers demonstrate exfiltration through nominally input-only analog pins in mixed-signal ICs, recovering data at 10 kbps on a 55nm PPG front-end.

The paper identifies a directionality-based attack class in analog/mixed-signal (AMS) ICs where data-dependent circuit-offset modulation converts a nominally input-only pin into an outbound information channel. Three host conditions enable the attack: a closed-loop amplifier, an exposed amplifier input, and sufficiently high impedance at that pin. Silicon validation on a photoplethysmography analog front-end in 55nm CMOS showed exfiltration at up to 10 kbps with error-free PRBS recovery, under 0.001% area overhead, and only 0.03 dB SNR reduction.

arXiv cs.CR · 17h agoResearch

25 Years of Mass Surveillance Is Enough

Bruce Schneier and Cindy Cohn argue post-9/11 mass surveillance expanded far beyond its counterterrorism justification and should be reevaluated for costs to rights.

An essay by Bruce Schneier and Cindy Cohn (originally in Lawfare) traces the post-9/11 shift from targeted surveillance to mass collection of telephone and internet metadata. It cites the Section 215 bulk phone records program, struck down in interpretation by the Second Circuit in 2015 and curtailed by the USA Freedom Act, and the NSA's Upstream program under Section 702 of the 2008 FISA Amendments Act, which ended content searches in 2017. The authors note mass surveillance now serves routine law enforcement and immigration actions, with FBI Director Kash Patel confirming purchases of Americans' data from brokers, and private systems like Flock license plate readers and venue facial recognition feeding government access.

Schneier on Security · 2d agoPolicy & legal

OptiPrime: Optimizing Private Inference through Protocol-Hardware Co-design

OptiPrime co-designs HE-MPC protocols with hardware acceleration to remove network communication bottlenecks in private DNN inference, beating Cheetah by up to 5.7x.

OptiPrime is a protocol-hardware co-optimization framework for private deep neural network inference based on hybrid homomorphic encryption (HE) and multi-party computation (MPC). It introduces a novel HE protocol for convolutions that reduces the number of transmitted output ciphertexts, addressing the network bottleneck that limits gains from commercial HE accelerators. A lightweight compression system reduces weight plaintext memory traffic by 10x, while a specialized dataflow maximizes on-chip reuse of intermediate ciphertexts. Experiments show up to 5.7x speedup over the Cheetah baseline on CPUs and 4.2x with an accelerator.

arXiv cs.CR · 2d agoResearch

The Fraud Ecosystem: A Transition From Known Marketplaces to a Fragmented Environment

Rapid7 analyzes how fraud marketplaces are fragmenting into specialized shops after larger marketplaces were dismantled, aided by new MITRE F3 framework

Rapid7 reports a shift from large known fraud marketplaces to a fragmented environment of smaller specialized storefronts such as Xleet, Blackpass, Infodig, and Styx, operating across dark web channels, Telegram, and P2P options. These Fraud-as-a-Service shops sell stolen accounts, PII, synthetic identity generation, infrastructure, and money laundering support, supporting schemes like business email compromise. MITRE's Fraud Fighting Framework (F3), introduced in early 2026, aims to help security teams prioritize monitoring of fraud TTPs, particularly account takeover techniques. Fraud damages are anticipated to approach hundreds of billions of USD.

Rapid7 Blog · 5d agoPhishing & fraud

Hardware Fingerprinting FTQC via Quantum Decoder Timing

Quantum decoder timing on IBM Heron processors forms a side channel enabling device fingerprinting with 89% accuracy and workload inference.

The work demonstrates that wall-clock syndrome-decoding times on fault-tolerant quantum computers constitute a novel hardware side channel. Using per-shot decoder timings from three IBM Heron processors collected over 68 days, a passive observer can reconstruct detector-firing distributions, estimate logical error rate, infer code distance, and fingerprint the specific device with up to 89% accuracy versus 33% for random guessing. Noisy simulation based on Google's 105-qubit Willow processor distinguishes nine surface-code patches at 81% accuracy, showing the channel persists across vendors and code families.

arXiv cs.CR · 6d agoResearch

OpenSSL’s new alpha build speeds up post-quantum crypto

OpenSSL 4.1.0 alpha1 adds DTLS 1.3 support and speeds up ML-DSA and ML-KEM post-quantum operations across several architectures.

The OpenSSL project released the first alpha of OpenSSL 4.1.0, months before general availability. The build adds DTLS 1.3 (RFC 9147) to secure UDP-based traffic such as VPNs, video calls and IoT, and includes optimized ML-DSA and ML-KEM operations for ppc64le, s390x and x86_64 plus AVX-512 acceleration for SHAKE hashing and AES-CBC decryption. Breaking changes include a new Net::Curl::Easy dependency for tsget, dropped Windows-on-Itanium and Windows CE support, and replacement of the no-ecdsa/no-ecdh Configure options with no-ec. It also adds GREASE support (RFC 8701), a DTLS mode for the SSL listener API, IKEv2 KDF support, and initial Elbrus2000 processor architecture support.

Help Net Security · 7d agoTools

FCC proposes public scorecard to rate telecoms on anti-robocall efforts

The FCC proposed a public scorecard rating telecoms' anti-robocall effectiveness and removed 14 providers from US networks for compliance failures.

The Federal Communications Commission issued a public notice proposing a scorecard that would assess how effectively retail voice providers, including wireless, wireline and VoIP, prevent illegal robocalls, drawing on Robocall Mitigation Database filings, consumer complaint and enforcement data. The agency stressed it is not a rulemaking imposing new requirements, and it is seeking comment on scope, such as whether to focus on larger providers. The same day, the FCC removed 14 providers from the Robocall Mitigation Database for non-compliance, effectively requiring other US providers to block their traffic within two days.

CyberScoop · 14d agoPolicy & legal

Wyden seeks upgraded NSA security guidance on commercial VPN use

Senator Ron Wyden asked the NSA to update public guidance on commercial VPN security risks and answer questions about foreign surveillance threats against single-hop VPNs.

Sen. Ron Wyden sent a letter to NSA Director Gen. Joshua Rudd urging the agency to revise public guidance on commercial VPNs, following earlier letters to federal agencies in March and July. He argues single-hop VPNs offer little protection against sophisticated adversaries able to compel or compromise the single provider, citing a Congressional Research Service paper favoring multi-hop and mixnet architectures. The letter references a September NSA advisory on a China-sponsored campaign against telecom, government and military networks and asks unclassified questions about multi-hop systems such as Apple Private Relay, Tor and Nym versus mixnets.

CyberScoop · 14d agoPolicy & legal

Treasury sanctions alleged Iranian hackers as part of ‘economic D

US Treasury sanctioned four Iranians linked to MOIS-directed hacks that compromised and exfiltrated data from US critical infrastructure, energy, defense, and financial targets.

The Treasury Department designated four Iranian individuals over alleged hacking and cybertheft against US companies in energy, defense, healthcare, IT, and financial sectors since at least late 2023, as part of an 'economic D-Day' sanctions package. It is the second action in weeks against the group, following an indictment of cybercriminals affiliated with Tehran's Mabna Institute; leadership includes Behzad Mesri, first sanctioned in 2018, and the attacks are described as directed by the Ministry of Intelligence and Security (MOIS). Treasury also expanded secondary-sanction categories across digital assets, technology, gold, aviation, and shipping, and noted some group members pursued personal enrichment, including targeting Iranian companies.

CyberScoop · 22d agoPolicy & legal

New TCG guidance gives buyers a way to test PQC-ready TPM claims

Trusted Computing Group published PTP 1.07-based requirements defining PQC-ready and PQC-upgradable TPM designations to guide buyers assessing quantum-safe hardware.

The Trusted Computing Group published requirements establishing PTP 1.07, based on TPM 2.0 Library Specification Version 1.85, as the baseline for a 'TCG PQC-ready TPM', and defined a second designation, 'TCG PQC-upgradable TPM', for chips that can be upgraded to that support. The guidance lets buyers request vendor evidence that TPMs meet end-to-end post-quantum requirements for identities, attestation, and hardware-anchored trust rather than single-algorithm compliance. TCG also announced plans to extend its certification programs to certify TPMs meeting PTP 1.07, noting that 90% of businesses still lack a formal PQC roadmap.

Help Net Security · 23d agoTools

Eight years later, federal authorities re-up charges against alleged Iranian hackers at Mabna Institute

US prosecutors unsealed a superseding indictment charging 17 Iranians in the Mabna Institute's state-sponsored theft of 31.5 terabytes from universities and companies.

The superseding indictment unsealed in the Southern District of New York charges 17 people affiliated with Tehran's Mabna Institute, adding eight defendants to the 2018 indictment of nine. The institute allegedly compromised over 100,000 professor email accounts worldwide, including 8,000 accounts at 144 US universities, and stole at least 31.5 terabytes of academic journals, dissertations, and e-books. US universities spent approximately $3.4 billion procuring the stolen data, and victims also included at least five federal and state agencies, 42 US companies, and 11 foreign companies including HBO. The State Department's Rewards for Justice program is offering up to $10 million for information on four of the defendants.

CyberScoop · 29d agoPolicy & legal

Risky Bulletin: The EU publishes its upcoming cybersecurity standards

ETSI releases 17 draft cybersecurity standards vendors must meet when the EU Cyber Resilience Act takes effect in December 2027.

The European Telecommunications Standards Institute published 17 interim draft standards covering operating systems, routers, firewalls, VPNs, SIEMs, browsers, password managers, smart home devices, toys and wearables. They mandate basic security features such as post-sale updates, shipped SBOMs, modern cryptography and secure-by-default settings; public comments run until November, with final versions expected in December, one year before CRA compliance begins in December 2027. The newsletter also reports Irregular taking responsibility for AI test-environment escapes involving Anthropic and Meta frontier models, a breach at France's tax agency exposing 678,000+ citizens' data claimed by hacker ZeroBytes, and Kazakhstan eGov data covering 15 million citizens listed for sale on an underground forum. Additional briefs cover a $3.2 million Harmony Protocol theft crashing the ONE token 40%, Columbus Police still restoring systems two years after ransomware, DDoS attacks on Threema's provider, and Ukraine's GUR claiming a cyberattack on Wildberries.

Risky Business News · Aug 17, 2026Policy & legal2

Trump turns to private sector in offensive hacking operations memo

Trump signed a national security memorandum authorizing vetted private companies to conduct offensive cyber operations against transnational criminal organizations under federal oversight.

The memorandum creates a federal coordination center program authorizing 'Participating Companies' to conduct Cyber Surveillance Operations and Cyber Effects Operations against foreign cyber-enabled transnational criminal organizations. Participating firms must contract with the Justice Department or Department of Homeland Security, undergo vetting, and comply with existing laws including the Computer Fraud and Abuse Act. The White House cited sustained fraud and cyber-enabled campaigns from TCOs as justification, building on a March fraud-focused executive order. Experts including Veracode co-founder Chris Wysopal called it a major shift in U.S. cyber policy, though it stops short of broader 'hack back' proposals.

CyberScoop · Aug 13, 2026Policy & legal1

Post-quantum migration gets harder when every user holds a key

Quantus CEO Christopher Smith discusses post-quantum migration pitfalls, including oversized keys breaking IPsec, SSH and TLS, and hard-to-migrate blockchain user keys.

Quantus CEO Christopher Smith describes post-quantum migration findings from banks and hospitals, including forgotten default passwords, orphaned admin keys held by former employees and hidden password hashes on user devices. Larger post-quantum keys and signatures break size assumptions in IPsec, SSH, TLS and libp2p, while migrating blockchain user keys remains hard because every user must act. He argues boards should fund quantum migration like insurance by quantifying cryptographic failure risk, and warns a silent quantum break would be difficult to detect from outside.

Help Net Security · Aug 12, 2026Research