Peter Parker has actually had his identity exposed on several occasions, but he's always been able to put the genie back in the bottle, either through a convoluted explanation, or through a horrendous retcon wherein he sacrificed his entire life to save Aunt May. Priorities, Pete. Priorities.
Unsurprisingly, the most shocking occasion where Spider-Man had his identity revealed also related to that retcon. Back during Civil War, when Marvel's superheroes found themselves pitted against each other on the topic of accountability and individual liberty (which included the right to have a secret identity), Spider-Man wound up surprising everyone by siding with Tony Stark, who was heading up the pro-registration side of the debate.
Parker's own identity had been a closely guarded secret for four decades by this point, and it was for that reason that Tony believed he should be the poster-boy of the Pro-Reg movement. Stark convinced Peter to follow in his footsteps and reveal his true identity to the world - a decision Spidey would later come to regret.
Spider-Man voluntarily giving up his anonymity may not count as him being exposed per se, but Stark's manipulation could definitely put it into that bracket.
WhatCulture's very own resident movie guy, Ewan has been working in the content creation biz for over 10 years now, having started as a freelance contributor to WhatCulture Gaming all the way back in 2015. After graduating with a First-Class Honours in History from Northumbria University in 2017 (where he won a prize for a totally killer dissertation on the Watergate years), Ewan took on the role of Comics Editor at WhatCulture and quickly developed WhatCulture Comics into one of the biggest superhero-focused channels on YouTube. He followed this with a brief hiatus at Screen Rant in 2021, where he worked across the Gaming and Film sections as a writer and editor, before returning to WhatCulture as a Senior Content Producer / Presenter in 2023. He started his own podcast, We Love Dad Movies, in 2022, and has contributed several written pieces to the Eisner-nominated comics website Shelfdust as well.
In his current role, Ewan incorporates his love of cinema, comic books, and history into written pieces and video essays for WhatCulture's Film & TV channel, as well as WhatCulture Gaming and WhatCulture Horror, with a particular focus on nineties-era Dad Movies, old school Westerns, and Golden Age Hollywood Noir. John Carpenter is his fave, and he thinks Batman Beyond should never have been cancelled. If that's your vibe, you'll probably like his stuff.