As has been widely foreseen, the Taliban victory in Afghanistan has been generally celebrated in extreme Islamist quarters of the Internet. The Wall Street Journal has an overview of the relevant activity in social media. The faithful remnant of al Qaeda (an ally the Taliban never repudiated) has been particularly prominent, seeing in the fall of Kabul a vindication of their patient endurance.
The immediate and forthcoming human toll of the Taliban's success has rightly dominated coverage of the news from that country, but it's worth mentioning another, secondary risk: the threat to sensitive data the events present. The Washington Post observes that the US probably removed, rendered inaccessible in secure clouds, or simply destroyed data it held as its forces withdrew (and destruction can take many forms, including consumption by fire; see pages 2-13 and 2-14 of TC 3-23.30 for the uses of thermite). But the large amounts of information the US shared with the now-deposed Afghan government are almost certainly now in Taliban hands.
Not all sensitive data governments hold in clouds are held securely. On July 19th researcher Bob Diachenko found and reported an FBI-administered Terrorist Screening Center watchlist exposed online. The exposed server was taken down on August 9th.
Researchers at Analyst1 outline what they've found with respect to the Russian government's toleration and enabling of ransomware gangs.
T-Mobile confirms that it was indeed the subject of a cyberattack, Vice reports, but the mobile provider is still investigating whether customer data were compromised in the incident.