Today in Focus

Our Latin America correspondent, Tom Phillips, heads to Roraima to hear what’s at stake for the rainforest and the communities that live there in the Brazilian presidential runoff on Sunday. Send your comments and questions to tif.questions@theguardian.com. Help support our independent journalism at theguardian.com/infocus

Websites around the world have been taken offline as governments and businesses scramble to fix a flaw in the computer language PHP. There are fears that hackers could exploit the vulnerability to steal data, take control of web servers and disrupt services. Millions of attempts have already been made to attack websites since the issue with the programming language was revealed, cybersecurity companies have said. Michael Safi speaks to global technology reporter Aisha Down – watch on YouTube. Help support our independent journalism at theguardian.com/infocus

Political correspondent Aletha Adu explores whether the Conservative party under Kemi Badenoch is about to become, once again, the UK’s leading party on the right. Send your comments and questions to tif.questions@theguardian.com. Help support our independent journalism at theguardian.com/infocus

Climate campaigners have condemned the UK government’s decision to allow the drilling of the Jackdaw gasfield. Critics argue the move will put climate targets at risk, while failing to reduce energy bills and the cost of living crisis. But there could be a significant victory for green activists when it comes to the much larger Rosebank oilfield, with the energy secretary, Miatta Fahnbulleh, leaning towards rejecting approval. Michael Safi speaks to environment correspondent Matthew Taylor – watch on YouTube. Help support our independent journalism at theguardian.com/infocus

Serbia’s authoritarian president personally intervened to remove the protection of a historic landmark – then came protests and prosecutions. Tom Burgis on the murky tale of Trump Tower Belgrade. Help support our independent journalism at theguardian.com/infocus