Akamai has a cool Real-time Web Monitor web page.
Akamai monitors global Internet conditions around the clock. With this real-time data we identify the global regions with the greatest attack traffic, cities with the slowest Web connections (latency), and geographic areas with the most Web traffic (traffic density).
Here are the current attacks.
Akamai measures attack traffic in real time across the Internet with our diverse network deployments. We collect data on the number of connections that are attempted, the source IP address, the destination IP address and the source and destination ports in real time. The packets captured are generally from automated scanning trojans and worms looking to infect new computers scanning randomly generated IP addresses. The attack traffic depicts the total number of attacks over the last twenty-four hours.
Values are measured in attacks per 24 hours (attacks/24hrs). Regions are displayed as countries or states.
Akamai monitors the amount of data being requested and delivered - by geography at any given moment in time. Displayed in this interface are the top ten regions with the current highest traffic volumes.
Values are measured as percentage of global network traffic. Regions are displayed as countries or states.
Akamai measures network latency between most major cities via regularly automated tests. These tests consist of web connections and downloads as well as ICMP pings. Displayed in this interface are the current top ten worst performing cities. Absolute Latency depicts the current latency of a given city, while Relative Latency depicts the differential between the city's current latency and its historical average latency.
Values are measured in milliseconds (ms).