Generate an appropriate single-sentence summary for the given text such that it includes the main topic of the text.

By Tom EspinerBusiness reporter Changes from October include the introduction of a Millionaire's Raffle. But mathematician David Hodge said that people would be much less likely to win any other cash prize. This is because under the new rules, the pool of numbers that players have to choose from will increase from 49 to 59. For example, as it stands, people choose six numbers up to 49, and the odds of winning the Lotto jackpot are just under one in 14 million. These odds will lengthen to around one in 45 million when the new changes come in. Increasing the number pool size will roughly halve people's current chance of getting a cash prize - apart from through the Millionaire's Raffle - said Mr Hodge, a lecturer in statistics from the University of Nottingham. "The chance of winning something monetary is dropping by between 40% and 50%," he told the BBC. More winners? Camelot said the new Lotto Millionaire's Raffle "will guarantee at least two millionaires each week in addition to 20 winners of £20,000 in every draw". Also, under the changes to the rules, players who match two numbers will win a Lucky Dip ticket for a future draw. Camelot said this will create an "extra 1.8 million winners each week". But Mr Hodge said that it was just the chance of having another go at the game that would increase, rather than winning a cash prize. "Now the vast majority of your 'wins' are just winning another ticket for next week - which is just shy of a 10% chance. Sure, winning another ticket does give you another chance to win next week, but it doesn't come close to the almost halved chance each time of winning £25," he said. However, he added that people played Lotto for different reasons. If people played with the aim of giving money to charity, or simply for the fun of playing, they would be more likely to like the new rules, he said.
National Lottery operator Camelot is to alter the rules of its Lotto game and says it will give players better odds of becoming a millionaire.

Ysgol T Llew Jones has opened in Brynhoffnant, near Llandysul, and replaces four small schools. Mr Jones, who died in January 2009, aged 93, was a Welsh language author from nearby Pontgarreg, and he had also been a head teacher. He wrote more than 50 books, including 35 for children, in a career spanning more than 50 years. Ceredigion council said Ysgol T Llew Jones was the second area school to be built in Ceredigion over the last three years. It replaces primary schools at nearby Blaenporth, Glynarthen, Rhydlewis and Pontgarreg, where Mr Jones was from. The new school will be used by the wider community as well children. It has a large hall equipped with a stage, lighting and sound system for theatrical productions, an area for meetings and IT equipment. Hag Harris, council cabinet member for education, said: "The facilities at the school are exceptional particularly the provision of a fully equipped hall. I am sure that the wider community will embrace the school and use it as an important community resource." Author Mr Jones drew on local legends, characters and places and was described as a "great communicator". He became the only person to win back-to-back chairs at the National Eisteddfod in the post-war era.
A new £5m primary school in Ceredigion has been named in honour of a late award-winning author.

By Leo KelionTechnology desk editor The action follows the revelation that a flaw with the software meant that an attacker could run down the battery of a target's car and see data about its recent journeys. The firm had been informed of the problem a month ago but only acted after details of the issue were flagged online. Nissan denies there was a safety issue. However, it has disclosed that its eNV200 electric vans were also vulnerable. The security researcher who had alerted the Japanese automaker to the problem a month ago believes the company should have taken the step earlier. Troy Hunt said he only blogged about the risk after seeing that other people had discovered and discussed it in online forums. Even so, he said he welcomed the latest development. "Disabling the service was the right thing to do given it appears it's not something they can properly secure in an expeditious fashion," he told the BBC. "Hopefully this will give them time to build a more robust solution that ensures vehicle features and driving history are only accessible via the authorised owner of the car." Stranded drivers Mr Hunt discovered that anyone can control the heating and air conditioning systems of a stranger's Leaf by sending it commands via a web browser because the car's companion app was not configured to verify the owner's identity. Instead, it only required a vehicle identification number (Vin). Vin numbers are stencilled into the windscreens of cars and Mr Hunt noted that it would be relatively easy to script a process that would hunt the net for vulnerable vehicles. In addition, the hack allowed an attacker to see details about journey times and distances, but not location details. Mr Hunt suggested this would be enough to deduce when someone had driven far from their home and run their battery down to leave them stranded. Since the hack would not work when cars were moving and did not affect their steering controls, he acknowledged that it would not threaten people's lives. But after first telling Nissan about the problem on 23 January, he said he felt the company should have suspended the app at an earlier point. As a result he published details of the hack on Wednesday alongside information about how car owners could protect themselves. Vans also affected A day later, Nissan disabled the service. "The NissanConnect EV app - formerly called CarWings - is currently unavailable," the firm said in a statement. "This follows information from an independent IT consultant and a subsequent internal Nissan investigation that found the dedicated server for the app had an issue that enabled the temperature control and other telematics functions to be accessible via a non-secure route. "No other critical driving elements of the Nissan Leaf or eNV200 are affected, and our 200,000-plus LEAF and eNV200 drivers across the world can continue to use their cars safely and with total confidence. "We apologise for the disappointment caused to our Nissan Leaf and eNV200 customers who have enjoyed the benefits of our mobile apps. However, the quality and seamless operation of our products is paramount. "We're looking forward to launching updated versions of our apps very soon." Read and watch more cybersecurity stories in our special index

Nissan has suspended the functions of an app that could have been used to hack its Leaf electric cars.

