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Blue-ringed octopuses contain a powerful neurotoxin called tetrodotoxin, which can be lethal to humans in small doses. (Image credit: James Reynolds)

A woman in Australia was recently bitten multiple times by a blue-ringed octopus — one of the world’s most toxic animals — and lived to tell the tale.

Blue-ringed octopuses are a group comprising four species: the greater blue-ringed octopus (Hapalochlaena lunulata), the southern blue-ringed octopus (Hapalochlaena maculosa), the blue-lined octopus (Hapalochlaena fasciata) and the common blue-ringed octopus (Hapalochlaena nierstraszi). These octopuses are small enough to fit in the palm of your hand and are covered in tiny rings that flash with an iridescent blue when the animals are threatened. Blue-ringed octopuses also contain tetrodotoxin, a powerful neurotoxin that can paralyze and kill humans even in small doses.

On March 16, the woman was bitten twice on her abdomen by an unknown species of blue-ringed octopus at a beach near Sydney in New South Wales (NSW), Australia. She had collected a small shell while swimming, and when she picked it up to look at it, the tiny cephalopod fell out and landed on her stomach, the NSW Ambulance service wrote on Facebook (opens in new tab) .

The woman experienced some abdominal pain and was treated with cold compresses before being taken to the hospital to be monitored for more symptoms, according to NSW Ambulance. It is unclear why the woman escaped relatively unharmed.

Related: 30 unusual poisonous animals

Tetrodotoxin stops nerves from signaling to muscles by blocking sodium ion channels. This causes rapid weakening and paralysis of muscles, including those of the respiratory tract, which can lead to respiratory arrest and death. The effects of tetrodotoxin can occur rapidly or have a delayed onset, so death can occur anywhere between 20 minutes and 24 hours after the toxin enters the body, according to the Centers for Disease Control and Prevention (CDC) (opens in new tab) . 

There is no known antidote for tetrodotoxin. All health care practitioners can do is provide supportive care or use a ventilator if patients are unable to breathe, according to the CDC.

Blue-ringed octopuses do not create tetrodotoxin themselves. Instead, the toxin is produced by symbiotic bacteria that live in their salivary glands, according to the Australian Institute of Marine Science (opens in new tab) . Tetrodotoxin is found throughout the octopus’s tissues, not just in specific venom glands, which makes them some of the few animals that are both poisonous and venomous. It also means that a person can receive a lethal dose if one of these octopuses touches their skin.

Despite being so toxic, blue-ringed octopuses have caused only three confirmed deaths, according to WebMD (opens in new tab) .

Blue-ringed octopuses flash their iridescent rings to warn predators of their toxicity. (Image credit: Subaqueosshutterbug / Getty)

The iridescent blue rings that flash on the octopuses’ bodies warn predators of their toxicity. They can flash their rings in less than 0.4 seconds, thanks to tiny color-changing organs called chromatophores, which are dotted across the animals’ skin.

While blue-ringed octopuses rarely kill people, there have been plenty of close calls.RELATED STORIES—Octopuses torture and eat themselves after mating. Science finally knows why.

—Rare octopus video shows ‘once-in-a-lifetime encounter

—Octopuses may be terrifically smart because of this genetic quirk they share with humans 

In 2006, a 4-year-old boy was almost killed after being bitten by an octopus he picked up in a rock pool on a beach in Queensland. The boy vomited several times before developing blurred vision and then losing control of most of his muscles, according to a case report published in the journal Clinical Toxicology (opens in new tab) . After spending 17 hours on a ventilator, he eventually made a full recovery. 

And in March 2021, a woman was heavily criticized online after sharing a video of herself holding a blue-ringed octopus in Bali, although she did not know it was highly toxic at the time and escaped unscathed, according to Insider (opens in new tab) .

Blue-ringed octopuses aren’t the only animals that contain tetrodotoxin; it can be found in some newts, frogs and puffer fish. 

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Technology

Samsung launches thin S25 Edge as Apple reportedly prepares the iPhone ‘Air’

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Samsung launches thin S25 Edge as Apple reportedly prepares the iPhone 'Air'

Samsung launched the Galaxy S25 Edge, a thinner version of its flagship smartphone.

Arjun Kharpal | CNBC

Samsung on Tuesday unveiled a thin version of its flagship smartphone in an unusually timed launch as it looks to maintain momentum in its mobile divison against an uncertain consumer backdrop and U.S. tariff policy.

The Samsung Galaxy S25 Edge is just 5.8 millimeters thin and weighs 163 grams, making it one of the thinnest smartphones on the market.

Samsung said the device starts at $1,099 and goes on sale on May 30.

The launch comes just under four months after Samsung staged its annual flagship phone launch for the S25 series. It is unusual for Samsung to launch a new high-end device this soon after the January event with the normal timeline generally being the middle of the year for the unveiling of its latest foldable phones.

The move highlights the South Korean tech giant’s desire to capitalize on the success of the S25 range as it faces rising competition from Chinese players and an uncertain macroeconomic environment.

Samsung reported last month that it saw a jump in revenue and profit in the first quarter of the year at its mobile division thanks to strong sales of its S25 series.

However, Daniel Araujo, vice president at Samsung’s mobile division, warned on an earnings call last month that smartphone demand is expected to decrease in the second quarter due to “seasonality trends” and forecasts could be “adjusted” further due to global tariff policy.

U.S. President Donald Trump’s “reciprocal” tariffs took effect in April though they were paused shortly after. The White House exempted certain tech products such as smartphones and chips, providing some reprieve for companies like Samsung and Apple. The U.S. and China meanwhile agreed on Monday to pause most of their tariffs on each party.

Araujo said that the S25 Edge could help “sustain flagship-centric sales,” underscoring why Samsung has decided to launch the phone now.

Apple reportedly working on thin iPhone

Thinner phones have become an obsession with smartphone makers who are hoping these devices will appeal to people who want the flagship experience without the size of a traditional device. Samsung’s S25 Edge has a 6.7-inch display, the same as the Galaxy S25+, but it is thinner and lighter.

The Samsung Galaxy S25 Edge on display during a briefing at the Samsung KX store in London, U.K.

Arjun Kharpal | CNBC

The phone also packs a dual camera system and Samsung’s latest AI features.

“For the second half of 2025 ‘thin is most definitely in’,” Ben Wood, chief analyst at CCS Insight, told CNBC.

“Samsung is first out the gate with a slim design, but Apple is expected to follow in September, and the burgeoning Chinese brands such as Honor and Xiaomi probably won’t be far behind.”

Samsung may be trying to get ahead of its closest rival Apple, which is gearing up to launch a thin version of its flagship device dubbed the iPhone 17 Air, according to a Bloomberg report this year.

“It is hard to believe this is not a pre-emptive strike following the widespread speculation that Apple will have a thin iPhone in its next line-up,” Wood added.

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Sports

Journalism opens as 8-5 favorite for Preakness

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Journalism opens as 8-5 favorite for Preakness

HALETHORPE, Md. — Journalism is the morning line favorite for the 150th running of the Preakness Stakes.

The Kentucky Derby runner-up to Sovereignty opened at odds of 8-5 on Monday night when post positions were drawn for the middle leg of horse racing’s Triple Crown. Journalism is again set to be ridden by jockey Umberto Rispoli and leave the starting gate from the No. 2 post.

Post time is set for 7:01 p.m. EDT on Saturday.

No. 7 Sandman is the 4-1 second choice in the field of nine, which does not include Sovereignty after his owners and trainer decided not to run the Derby winner two weeks after his triumph at Churchill Downs. The Preakness goes on without a true shot at a Triple Crown winner for a fifth time in seven years since Justify swept all three races in 2018.

Bob Baffert, who trained Justify and 2015 Triple Crown champion American Pharoah, is entering Goal Oriented looking for a record-extending ninth victory in the race. Fellow Hall of Famer D. Wayne Lukas can tie Baffert if he wins the Preakness back-to-back, this time with American Promise a year after Seize the Grey ended Mystik Dan’s Triple Crown bid.

There are three Derby horses running in the $2 million Preakness at Pimlico Race Course in Baltimore: Journalism, American Promise and Sandman, the latter of whom will be ridden by John Velazquez for trainer Mark Casse. American Promise drew the No. 3 post and opened at odds of 15-1.

New to the Triple Crown trail, along with No. 1 Goal Oriented (6-1), are No. 4 Heart of Honor (12-1), No. 5 Pay Billy (20-1), No. 6 River Thames (9-2), No. 8 Clever Again (5-1) and No. 9 Gosger (20-1).

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Environment

Hackers turn Nissan LEAF into full-scale RC car, record drivers’ conversations [video]

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Hackers turn Nissan LEAF into full-scale RC car, record drivers' conversations [video]

A team of white hat European hackers using their brains, keyboards, and a couple of bits and baubles from eBay managed to take control of a 2020 Nissan LEAF and violate just about every privacy and safety regulation in the process.

The best part: they recorded the whole thing.

Budapest-based cybersecurity experts PCAutomotive were able to exploit a number of vulnerabilities in a 2020 Nissan LEAF that enabled the white hat team to geolocate and track the car, record the texts and conversations happening inside the car, playing media back through the car’s speakers, and even (this is the genuinely terrifying dangerous part) turning the steering wheel while the car was moving. (!?)

Maybe the scariest part of this hack, however, is how seemingly easy it was to pull off by starting with a “test bench simulator” built using parts from eBay and exploiting a vulnerability in the LEAF’s DNS C2 channel and Bluetooth protocol.

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The PCAutomotive team gave a hugely detailed 118-page presentation of their exploit at black hat Asia 2025, which we’ve included at the bottom of this post, in case the original link goes dead. If you’re into that sort of thing, the fun stuff starts around page 27. And, if you’re not, just know that all the vulnerabilities were disclosed to Nissan and its suppliers between 02AUG2023 and 12SEP2024 (p. 116/118), and the “attack” itself can be seen in the video below that. Enjoy!

Summary of vulnerabilities

  • CVE-2025-32056 – Anti-Theft bypass
  • CVE-2025-32057 – app_redbend: MiTM attack
  • CVE-2025-32058 – v850: Stack Overflow in CBR processing
  • CVE-2025-32059 – Stack buffer overflow leading to RCE [0]
  • CVE-2025-32060 – Absence of a kernel module signature verification
  • CVE-2025-32061 – Stack buffer overflow leading to RCE [1]
  • CVE-2025-32062 – Stack buffer overflow leading to RCE [2]
  • PCA_NISSAN_009 – Improper traffic filtration between CAN buses
  • CVE-2025-32063 – Persistence for Wi-Fi network
  • PCA_NISSAN_012 – Persistence through CVE-2017-7932 in HAB of i.MX 6

Remote exploitation of Nissan LEAF



Electrek’s Take


Nissan-Bolt-EV-LEAF
2024 Nissan LEAF; via Nissan.

This is one of those posts that, on the bright side, does a great job explaining how a remote operator can “log in” to a vehicle and steer it out of trouble when a weird or edge-case-type situation pops up.

Unfortunately, this is also one of those posts that some of the more clueless anti-EV hysterics will point to and say, “See!? EVs can get hacked!” But the reality is that virtually any car with electric power steering (EPS), electronic throttle controls, brake-by-wire, etc. can be hacked in a similar way. But, while steering a target’s car into an oncoming semi might be a great way to pull off a covert CIA assassination, the more worrying issue here is the breach of privacy and recording – unless you want to spend some time in El Salvadoran prison, I guess.

Remember, kids: Big Brother is watching you.

SOURCE | IMAGES: black hat.


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