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{{Warningbox|This tutorial will introduce you to breaking devices by determining when a device is performing certain operationshas not yet been updated for ChipWhisperer 4. It will break simple bootloaders which may otherwise seem 'secure' against password attacks0. In particular this uses the excellent [http://jtxp0 release.org/tech/tinysafeboot_enIf you are using 3.htm TinySafeBoot] bootloader for AVR microcontrollersx. The example uses an old release of TinySafeBoot, since newer releases do not have this vulnerability!x see the "V3" link in the sidebar.}}