Solana's Alpenglow Protocol Targets Sub-Second Finality With New Certificate System

Solana's upcoming Alpenglow consensus protocol replaces the current vote-based finality model with a certificate system using aggregated BLS signatures, aiming to confirm transactions in hundreds of milliseconds rather than the 12-plus seconds required today. A block reaches finality once 60% of staked validators sign the same message, while an 80% threshold enables single-round fast finality. The protocol's design assumes a maximum network message latency of 250 milliseconds, and a leader producing no block is now skipped after 800 milliseconds — down from 1.4 seconds as of a June 29, 2026 update. These figures are protocol design targets derived from the validator source code and have not yet been measured on Solana's mainnet, as the Alpenglow activation gate had not triggered at the time of writing.

Solana Plans to Cut Slot Time from 400ms to 200ms in Four Staged Steps

Solana is preparing to halve its slot time from 400 milliseconds to 200 milliseconds through a proposal called SIMD-0525, rolling out across four incremental feature gates at 350ms, 300ms, 250ms, and finally 200ms. Each gate activates once 95% of staked validators run compatible software, taking effect at the start of the following epoch. While transactions per second remain roughly preserved, the compute limit per block will drop from 60 million to 30 million units, meaning large transactions that exceed new per-block thresholds may fail to fit at all. Time-sensitive operations tied to slot counts — such as blockhash expiry windows, epoch lengths, and vesting or liquidity lock schedules — will all shrink proportionally in real-world time even though their slot-count values stay unchanged. None of the four feature gates had been activated on any Solana cluster at the time of reporting, and no public activation schedule has been released.

Solana Sandwich Attacks Now Detectable Using Public Blockchain Data

A new method allows Solana users to detect sandwich attacks — a form of MEV exploitation — directly from their own wallet history using publicly available on-chain data. Since January 23, 2026, Solana's address history API began including each transaction's position within its block, making it possible to precisely locate a swap at a specific slot and index. A sandwich attack follows a three-step pattern: a bot buys a token just before a victim's trade, the victim executes at a worse price, and the bot immediately sells to pocket the difference. Data from a live tracker recorded approximately 8,700 SOL extracted daily in mid-September 2026, affecting around 74,000 distinct victim wallets in a single 24-hour period at an average cost of roughly $12 per affected swap. Reliable detection requires analyzing balance changes across transactions rather than just shared accounts, and must account for cases where the attacker's sell leg lands in the following block rather than the same one.

How Solana's Durable Nonces Enabled the $285M Drift Protocol Exploit

On April 1, 2026, Solana-based perpetuals protocol Drift suffered a $285 million loss after an attacker phished two of five members on its security council over several weeks. The attacker exploited Solana's durable nonce feature, which allows transactions to be signed well in advance and submitted at any chosen later time without expiring. Unlike standard Solana transactions — which become invalid after roughly 150 slots (about one minute) — durable nonce transactions remain valid indefinitely until the nonce account is advanced. The post-mortem concluded that authorization effectively occurred at the moment of signing, not execution, meaning the stolen signatures were sufficient to authorize the attack days or weeks later. While durable nonces serve legitimate purposes such as offline signing, multisig coordination, and scheduled payments, their ability to bypass the standard expiry window removes a key safety property that most users unknowingly rely on.

Seven Silent Ways Solana Drops Your Transaction Without Any Error or Log

On Solana, a transaction can disappear after being signed and sent, with no error message, no fee charged, and no log entry to explain what happened. There are seven distinct points in a validator's pipeline where a transaction can be silently discarded, each governed by specific technical thresholds. These include a congestion-based priority floor that kicks in when the leader's 100,000-transaction buffer hits 99% capacity, a bloom filter that drops duplicate or falsely flagged packets within a two-second window, and QUIC connection limits that restrict unstaked RPC nodes to just 128 concurrent streams. Additional silent failures can occur during peer forwarding, where packets from unstaked or already-forwarded nodes are rejected, and within RPC retry pools that abandon transactions once the 10,000-entry limit is exceeded. Understanding each failure point allows developers to adjust compute unit limits, retry timing, and RPC infrastructure to improve transaction delivery without changing the underlying logic.

Solana transaction ranking uses fee-to-cost ratio, not fee size alone

Solana block producers rank transactions by dividing the leader's reward by the transaction's compute-unit cost, not by the raw priority fee amount. This means two transactions paying identical lamports can land in vastly different queue positions depending on how much block space each consumes. Key cost drivers include the compute-unit execution limit and a loaded-accounts-data reservation, both of which default to their maximum values if developers do not explicitly set them. A worked example shows that trimming a swap's compute limit from 1.4 million to 80,000 units and capping loaded-data size raises the transaction's rank roughly 17 times while keeping the same lamport bid. Since 31 August 2026, ties in priority score are broken by arrival time, making microsecond-level submission speed a meaningful tiebreaker.

Taxman’s JAARing move can spook foreign investors

Try The Apartment

Discussion | Link

Telangana CM Orders Probe Into Farmhouse Allegedly Linked to Ex-CM KCR

Telangana Chief Minister Revanth Reddy has ordered an investigation into a farmhouse reportedly linked to former Chief Minister K. Chandrashekar Rao. The probe is part of an ongoing political rivalry between the ruling Congress and the opposition Bharat Rashtra Samithi. BRS hit back swiftly, with party floor leader T. Harish Rao alleging that the Reddy family collectively owns around 308 acres of land. The counter-allegation appears aimed at deflecting scrutiny and questioning the Congress leadership's own land holdings. The exchange marks a fresh escalation in political tensions between the two parties in the state.

Taylor Swift and Travis Kelce's Ohio mansion fence plans rejected twice by local board

Pop star Taylor Swift and NFL player Travis Kelce are facing a planning dispute over their $5.35 million Ohio property. The couple has sought permission to install fencing around their 21,000-square-foot Lake Erie mansion in Bratenahl village. Their proposals have been denied on two separate occasions by the local village board. Neighboring residents have raised objections over potential loss of lake views, open vistas, and declining property values. The couple is still awaiting approval for the proposed privacy enhancements.

GPS collars and camera traps reveal surprising lion-hyena rivalry dynamics

New research has upended the conventional understanding of how lions and hyenas interact in the wild. Using GPS collars and direct field observations, scientists tracked the movement patterns of both carnivores. The study found that while hyenas typically retreat when lions are near, male lions often actively approach and follow hyenas. This points to an asymmetric relationship between the two competing predators. Researchers believe these behavioral patterns may explain how the two species are able to coexist and share the same habitat.

Google Engineers Develop First Fully Vectorized Quicksort Algorithm

Google researchers have announced the development of the first vectorized implementation of the Quicksort algorithm, published via the Google Open Source Blog in June 2022. The new approach leverages vector processing to improve sorting performance across hardware platforms. The implementation is designed to be performance-portable, meaning it can run efficiently on a variety of processor architectures. This advancement aims to make one of computing's most widely used sorting algorithms significantly faster in practice.

FSSAI Chief Addresses Concerns Over Fake Paneer Sales in India

FSSAI chief Punhani spoke exclusively to NDTV about concerns surrounding the sale of adulterated paneer across India. He clarified that a large number of food inspections result in compliance, with violations representing only a fraction of cases. Punhani noted that media coverage tends to amplify instances of non-compliance, creating a perception that violations are widespread. He emphasized that not every vendor or producer is engaging in malpractice, but reported violations naturally attract public attention.

Hampshire reach Rachael Heyhoe Flint Trophy final after dominant win over Surrey

Hampshire secured their place in the Rachael Heyhoe Flint Trophy final with a commanding victory over Surrey. Charlotte Bouchier anchored the innings with a century, while Freya Kemp and Abi Norgrove each contributed half-centuries to post a formidable total. Spinner Lauren Wellington then claimed a five-wicket haul to bowl Surrey out and seal the win. The all-round performance demonstrated Hampshire's strength with both bat and ball throughout the match.

Houthis Release Footage Claiming to Show Downed Saudi F-15 Fighter Jet

Yemen's Houthi movement has released a four-minute video purportedly showing the shooting down of a Saudi F-15 fighter jet. The footage begins with clips of the aircraft being targeted, before cutting to nighttime scenes of large fires and rising smoke on the ground. The burning wreckage is believed to show the immediate aftermath of the crash. The release of the video appears to be a propaganda move by the Houthis to demonstrate their military capabilities against Saudi Arabia.

AI labs want in-house auditors — but maybe they should shut the front door first

There may be a simpler and more effective fix for rogue agents, hiding in plain sight.

17-Year-Old Indian Teen Wins $50,000 Scholarship for AI Model Improving Nuclear Reactor Safety

Praadhyumn Indaana, a 17-year-old student, has developed a physics-guided neural network designed specifically for nuclear reactor applications. The AI model significantly reduces prediction errors related to critical heat flux, a key safety parameter in reactor operations. His work offers improved understanding of reactor operating conditions, demonstrating a practical application of artificial intelligence in complex scientific engineering. The achievement earned Indaana a $50,000 scholarship along with notable recognition in the field.

Mira-Bhayander Civic Body Cancels Construction Permit for BJP MLA Mehta's Firm

The Mira-Bhayander Municipal Corporation has cancelled the construction permission granted to Seven Eleven, a company linked to BJP MLA Narendra Mehta. An additional tehsildar ruled against Seven Eleven and other respondents in a related petition. The ruling is expected to pave the way for Vohra's name to be officially entered in the disputed land records. Mehta subsequently announced he would relinquish possession of the contested land, claiming it had been sold through properly registered transactions.

Walmart offers $10 discount on Metroid Ravenous physical preorders

Walmart is selling physical preorders of Metroid Ravenous for $59.88, a $10 reduction from the standard $69.99 retail price, bringing it roughly in line with the digital version. The game is a 2D side-scrolling entry in the Metroid series for Nintendo Switch 2 and marks the franchise's return to that format since Metroid Dread in 2021. Nintendo unveiled the title at its September 2026 Direct, showcasing protagonist Samus navigating varied environments and battling enemies and bosses. Metroid Ravenous is scheduled to launch on January 28th, 2027, though it is unclear how long the preorder discount will remain available. Separately, the previous entry, Metroid Dread, is currently discounted to $41.99 on Amazon as part of Nintendo's Customer Appreciation sale running through September 26th.

Derbyshire edge slim first-innings lead as Northants promotion bid takes a blow

Derbyshire managed to secure a narrow first-innings lead against Northamptonshire in their County Championship clash, dealing a setback to Northants' promotion ambitions. Randell played a key role in Derbyshire's effort, helping his side claw back despite the hosts conceding an early advantage. The result puts pressure on Northamptonshire as they chase promotion in the ongoing county season. Meanwhile, in a separate fixture, Kent moved closer to a three-day victory, further complicating the promotion picture for rivals in the division.