A Twitter exchange between security practitioners Josh Corman and Mike Dahn demonstrates how once-heated arguments can forge friendships that ultimately benefit the entire industry.It’s been nearly two years since I covered a Corman talk where he compared PCI DSS to “the devil” and “No Child Left Behind.” At the time, he ruffled a lot of feathers among those who spent long hours helping companies with PCI compliance.Mike Dahn — current director of Big Four Consultancy and formerly with Verizon Business — was one of them. Security blogger, podcaster and QSA Martin McKeay was another.A back and forth on Twitter led to this debate on CSOonline. It didn’t end there. More PCI debate panels followed. People on both sides of the argument met up at events across the country to keep talking. As they did so, they started talking to each other offstage and, slowly, they found common ground.Now Corman and McKeay are working on the same team at Akamai. And, this morning, Dahn and Corman had this friendly exchange on Twitter: @MikD: “Twitter feature request: detect when operator has consumed 2 much coffee & block them from tweeting. Thankfully this doesn’t exist.”@joshcorman: “Is there really such a thing as too much coffee ;)”@MikeD to @joshcorman: “We need more scotch related security meetups. Why are you not in Miami this week? p.s. keep blogging.”@joshcorman: “@MikD had WAY too many conferences and trips through last week. Yes we need scotch-ups more often.”Two years ago, I’m not sure they really enjoyed being in the same room. Now they’re talking about drinking Scotch together.This is what happens when people keep the conversations flowing. After awhile, people become allies. It’s very good to see in an industry where powerful egos often clash bitterly.–Bill Brennerone-stop view of latest business threats. We created it for you! Bookmark it! Use it!CSO’s Daily Dashboard gives you a Sign up today.Get your morning news fix with the daily Salted Hash e-newsletter! Related content news Gwinnett Medical Center investigating possible data breach After being contacted by Salted Hash, Gwinnett Medical Center has confirmed they're investigating a security incident By Steve Ragan Oct 02, 2018 6 mins Regulation Data Breach Hacking news Facebook: 30 million accounts impacted by security flaw (updated) In a blog post, Facebook’s VP of product management Guy Rosen said the attackers exploited a flaw in the website's 'View As' function By Steve Ragan Sep 28, 2018 4 mins Data Breach Security news Scammers pose as CNN's Wolf Blitzer, target security professionals Did they really think this would work? By Steve Ragan Sep 04, 2018 2 mins Phishing Social Engineering Security news Congress pushes MITRE to fix CVE program, suggests regular reviews and stable funding After a year of investigation into the Common Vulnerabilities and Exposures (CVE) program, the Energy and Commerce Committee has some suggestions as to how it can be improved By Steve Ragan Aug 27, 2018 3 mins Vulnerabilities Security Podcasts Videos Resources Events SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe