Those that aren't "strict" in certain areas. Examples: * Those without memory management (I'm not talking about garbage collection, though there seems to be a

Those that aren't "strict" in certain areas. Examples: * Those without memory management (I'm not talking about garbage collection, though there seems to be a correlation). Buffer overflows/overruns and its cousins have caused many security flaws, including heartbeat and even flaws in java, where it interops with C programs for performance's sake. * Syntactical leniency wrt. scope can lead to errors like apple's infamous "goto fail"