Ricin

The book explains that ricin is a poison. An indication of the worm's infection of a given PC is the existence of the file C:WIN.LOG or C:WIN2.LOG on the PCs hard disk, as well as seemingly random crashes of LSASS.EXE caused by faulty code used in the worm. One of these is a sticker reading "With all-natural ricin!". This was because he was tried as a minor. The Penn and Teller book How To Play With Your Food (ISBN 0679743111) includes a "gimmicks envelope" of small objects related to the tricks inside the book. On Friday, July 8, 2005, he received a 21 month suspended sentence. Ricin was mentioned in the "call me the prankster" comic at toothpaste for dinner. Sven Jaschan was found guilty of computer sabotage and illegally altering data.

Ricin was used as the poison of choice of the murderer in the 1962 comedy film Kill or Cure. The virus was released on his 18th birthday (April 29, 2004). Ricin was the poison used in the Agatha Christie Tommy and Tuppence whodunnit The House of Lurking Death in a 1929 collection of short stories called Partners in Crime. He was tried as a minor because the German courts determined that he created the virus before he was 18. Several Senate office buildings were closed as a precaution. It was the only variation that attempted to remove other worms from the infected computer, much in the way Netsky did. There were no signs that anyone who was near the contaminated area developed any medical problems. Another variation of Sasser, Sasser.E, was found to be circulating shortly after the arrest.

Senate Majority Leader Bill Frist's office. He immediately confessed to having written when he was a 17-year old not only Sasser, but also Netsky.AC, a variant of the Netsky worm. This information was not made public until February 3, 2004, when preliminary tests showed the presence of ricin in an office mailroom of U.S. Sasser was at first believed to have been authored in Russia by the same person(s) who created another worm usually referred to as Lovsan, MSBlast or Blaster (due to the media), a connection indicated by code similarities between the two, but on May 7, 2004, 18-year old computer science student Sven Jaschan from Rotenburg, Lower Saxony was arrested for writing the worm. Investigators said it was low potency and was not considered a health risk. The X-ray department at Lund University Hospital had all their four layer X-ray machines disabled for several hours and had to redirect emergency X-rays to a nearby hospital. The letter contained a fine powdery substance that later tested positive for ricin. The British Coastguard had its electronic mapping service disabled for a few hours, and Goldman Sachs, Deutsche Post, and the European Commission also all had issues with the virus.

The letter containing it was intercepted at a mail handling facility off the grounds of the White House, and it never reached its intended destination. The Nordic insurance company If and their Finnish owners Sampo Bank came to a complete halt and had to close their 130 offices in Finland. in November of 2003. flight company Delta Air Lines having to cancel several trans-atlantic flights because its computer systems had been swamped by the worm. Ricin was detected in the mail at the White House in Washington, D.C. The effects of Sasser include the news agency Agence France-Presse (AFP) having all its satellite communications blocked for hours and the U.S. All others accused in connection with the Wood Green flat were acquitted on all counts. Some technology specialists have speculated that the worm writers reverse-engineered the patch to discover the vulnerability, which would open millions of computers whose operating system have not been upgraded with the security update.

He was also jailed for life following a conviction for murdering the Special Branch policeman who went to arrest him. The LSASS vulnerability was patched by Microsoft in the April 2004 installment of its monthly security packages, prior to the release of the worm. In April 2005 31-year-old Kamel Bourgass was jailed for 17 years after being convicted of conspiracy to commit a public nuisance "by the use of poisons and explosives to cause disruption, fear or injury". Several variants called Sasser.B, Sasser.C, and Sasser.D appeared within days (with the original named Sasser.A). Secretary of State Colin Powell presented those arrested as the "UK Poison Cell" of a global terrorist network in making the case for military intervention in Iraq to the UN Security Council [7]. Microsoft's analysis of the worm indicates that it may also spread through port 139. On February 5, 2003, U.S. The worm scans different ranges of IP addresses and connects to victims' computers primarily through TCP port 445.

A number of men who were apparently living at the mosque were arrested. It spreads by exploiting a buffer overflow in the component known as LSASS (Local Security Authority Subsystem Service) on the affected operating systems. On January 20, 2003 Finsbury Park mosque was raided by police, apparently as part of the investigation into the alleged discovery of ricin in Wood Green. Sasser was first noticed and started spreading in the wild on April 30, 2004. A Special Branch policeman, DC Stephen Oake, was fatally stabbed during the arrests, and three other officers were also injured, one seriously. The specific hole Sasser exploits is documented by Microsoft in its MS04-011 bulletin, for which a patch had been released seventeen days earlier. Three more suspects were arrested in Manchester in England in connection with the investigation of the alleged ricin found in London, following a raid carried out pursuant to an investigation into immigration issues. Thus it is particularly potent in that it can spread without the help of the user, but it is also easily stopped by a properly configured firewall, or by downloading patches from Windows Update [1].

They were not convicted of any poisons related crime. Like other recent worms, Sasser spreads by exploiting the system through a vulnerable network port. Six more suspects were arrested in Bournemouth in England in connection with the investigation into the alleged ricin incident in London. The Sasser worm is a computer worm that affects computers running vulnerable versions of the Microsoft operating systems Windows XP and Windows 2000. The analytic confusion was caused by the similarity of many plant proteins to one of the ricin components, which suggests that higher quality (better specificity and sensitivity) analytic tests for ricin are needed. Further analysis identified the material as ground wheat germ.

A little later several arrests were made in France and a bottle of something that tested positive for ricin was found. It appears that an individual conducting amateur research on poisons was found in this raid. Some acetone, 22 castor beans, and poor recipes for ricin and other poisons copied from the Internet were found. However at the trial of Kamel Bourgass in 2005 it became apparent that within a few days of the raid the leader of the Biological Weapon Identification Group at the Porton Down Defence Science and Technology Laboratory had concluded that ricin was not present at Wood Green [5] [6].

Media reports stated that a group was suspected of intending to use the poison in an attack on the London Underground. It was widely reported in the media that traces of ricin were detected by British police in a flat in Wood Green, North London after a raid on a suspected ring of terrorists on 5 January 2003. An aerosol powder may be prepared by spray drying or air grinding the purified ricin using cold air. The final ricin precipitate is dried and then purified by floatation in carbon tetrachloride.

The precipitated ricin may be reextracted once to further purify it. After precipitation, the crude ricin cake is washed with a 16.7% solution of sodium sulfate to remove extranious nitrogenous substances. The leachate is filtered to remove insoluble matter and the crude ricin then precipitated by the addition of a 12% solution of sodium sulfate with a pH of 7.0-8.0. Ricin is initially extracted from defatted castor beans by aquous extraction at pH 3.8 to yield a leachate containing solubilized ricin.

Modern extraction plants might use membrane filtration to make highly purified ricin isolates. The extraction of ricin from castor beans is very similar to the prepartion of soy protein isolates. The patent was removed from the United States Patent and Trademark Office (USPTO) database sometime in 2004, but is still available online through international patent databases. Dieke, and Charlotte Karel.

Corwin, Sally H. Alderks, Alsoph H. Craig, O.H. Secretary of the Army, are Harry L.

The inventors named in US Patent 3,060,165 (granted October 23, 1962) "Preparation of Toxic Ricin", assigned to the U.S. The process for creating ricin is well-known, in part because a patent was granted for it in 1952. Ricin is actually several orders of magnitude less toxic than botulinum or tetanus toxins, but those are more difficult to obtain. The major reason it is dangerous is that there is no specific antidote, and that it is very easy to obtain (the castor bean plant is a common ornamental, and can be grown at home without any special care).

Presumably it could be sealed inside some sort of dust particle that would dissolve in water, but this would be difficult. Since it acts as an enzyme, catalyzing destruction of ribosomes, even a single oxidation is likely to render the ricin molecule harmless. Pure ricin could be dispersed through the air, however it would tend to be oxidized and rendered harmless by ozone, nitrogen oxides, and other pollutants in a matter of hours. (Jan van Aken, an expert on biological weapons explained in an interview with the German magazine Der Spiegel that he judges it rather reassuring that Al Qaeda experimented with ricin as it suggests their inability to produce botulin or anthrax.).

Ricin denatures (ie, the protein changes structure and becomes less dangerous) much more readily than anthrax spores, which may remain lethal for decades. Ricin is easy to produce, but is not as practical nor likely to cause as high casualities as other agents. Hence, a military willing to use biological weapons and having advanced resources would rather use either of the latter instead. To put ricin used as weapon into perspective, it is worth noting that as a biological weapon or chemical weapon, ricin may be considered as not very powerful, if only in comparison with other poisons such as botulinum or anthrax.

In August of 2002, US officials asserted that the Islamic militant group Ansar al-Islam tested ricin, along with other chemical and biological agents, in northern Iraq. Despite this, more than 1 million metric tonnes of castor beans are processed each year, and approximately 5% of the total is rendered into a waste containing high concentrations of ricin toxin [4]. Under both the 1972 Biological Weapons Convention and the 1997 Chemical Weapons Convention, ricin is listed as a schedule 1 controlled substance. Despite ricin's extreme toxicity and utility as an agent of chemical/biological warfare, it is extremely difficult to limit the production of the toxin.

Thomas, Alexander Solzhenitsyn: A Century in His Life, 368-378). Earlier, Soviet dissident Aleksandr Solzhenitsyn also suffered (but survived) ricin-like symptoms after a 1971 encounter with KGB agents (D.M. He died in hospital a few days later; the pellet was discovered by chance during an autopsy and the poison linked back to the KGB. In 1978, the Bulgarian dissident Georgi Markov was assassinated by Bulgarian secret police who surreptitiously 'shot' him on a London street with a modified umbrella using compressed gas to fire a tiny pellet contaminated with ricin into his leg.

The best-known documented use of ricin as an agent of biological warfare was by the Soviet Union's KGB during the Cold War. Ricin was given the military symbol W. This conclusion was based on comparison of the final weapons rather than ricin's toxicity (LD50 <30 mg.min.m^–3). Though there were plans for mass production and several field trials with different bomblet concepts, the end conclusion was that it was no more economical than using phosgene.

During the Second World War the United States and Canada undertook studying ricin in cluster bombs. The War ended before it was weaponized. The dust cloud concept could not be adequately developed, and researchers believed the coated bullet/shrapnel concept was unethical. At that time it was being considered for use either as a toxic dust or coated bullets and shrapnel.

The United States investigated ricin for its military potential during the First World War. Use of ricin as an adjuvant has potential implications for developing mucosal vaccines. A promising approach is also to use the non-toxic B subunit as a vehicle for delivering antigens into cells thus greatly increasing their immunogenicity. Genetic modification of ricin is believed to be possible to lessen its toxicity to humans, but not to the cancer cells.

Ricin could be linked to a monoclonal antibody to target malignant cells recognized by the antibody. Ricin may have therapeutic use in the treatment of cancer. In the United states, a person caught manufacturing or possessing ricin may be sentenced up to 30 years in prison. As little as one castor bean, about 0.5 grams, may be fatal in a child.

Since 0.2 mg of purified Ricin constitutes a fatal dose, this is a considerable amount of ricin. The seed-pulp left over from pressing for castor oil contains on average about 5% by weight of ricin. Ricin is easily purified from castor-oil manufacturing waste. Since people do not get sick from eating large amounts of such products, ricin A is of extremely low toxicity if and only if the B chain is not present..

Many plants such as barley have the A chain but not the B chain. Ricin consists of two distinct protein chains (almost 30kDa each) that are linked to each other by disulfide bond:. Typically 2.5–20 raw seeds can kill an adult human; 4 a rabbit, 5 a sheep, 6 an ox, 6 a horse, 7 a pig, 11 a dog, but 80 for cocks and ducks.[3]. [2].

Although one seed contains enough ricin to kill an adult human, they may pass harmlessly through the digestive system if swallowed whole. Modern feed-making techniques break down the ricin in castor beans by heating at 140 degrees Celsius for 20 minutes, although some studies suggest that residual toxic effects may linger. Although the castor bean plant has long been noted for its toxicity, ricin was first isolated and named in 1888 by Hermann Stillmark. (See abrin).

Ingested in larger doses, ricin causes severe diarrhea and victims can die of shock. In small doses, such as the typical dose contained in a measure of castor oil, ricin causes digestive tract cramps. Long term organ damage is likely in survivors. There is no known antidote; only symptomatic and supportive treatment is available.

Ricin is poisonous if inhaled, injected, or ingested, acting as a toxin by the inhibition of protein synthesis. . It is considered to be twice as deadly as cobra venom. Ricin can be extracted from castor beans and is known to have an average lethal dose in humans of 0.2 milligrams (1/5,000th of a gram), though some sources give higher figures [1].

Its name comes from the seed's resemblance to the tick. The protein ricin (pronounced rye-sin) is a poison manufactured from the castor bean (Ricinus communis). Ricin B is important in assisting ricin A's entry into a cell by binding with a cell surface component. Ricin A is toxic to the cell by interfering with Ribosomes, responsible for protein synthesis.