Quelle  network_security_config.xml

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <base-config cleartextTrafficPermitted="false">
        <trust-anchors>
            <certificates src="system" />
            <certificates src="user" />
        </trust-anchors>
    </base-config>
    <domain-config cleartextTrafficPermitted="false">
        <!--
            Note that these pins are not used for CSP. Pinning the public key is part of the
            protocol.
        -->
        <domain includeSubdomains="true">threema.ch</domain>
        <pin-set>
            <pin digest="SHA-256">vGQZ8hm2h+km+q7rnJ7kF9S17BwSY0rbhwjz6nIupf0=</pin>
            <pin digest="SHA-256">3L0bKTNfTwVUCjYqqhZXJIO03qC00bSnuxZFsb09OUo=</pin>
            <pin digest="SHA-256">NN6Lb+2AE7CN3HWZKoWOe6mmHROOnywWoKZYWL1oHIU=</pin>
            <pin digest="SHA-256">efJCZofFPR3oV/bBk0wmehqnhy3Vv+s9P+3sjhHem/E=</pin>
            <pin digest="SHA-256">2Vpy8qUQCqc2+Lg6BgRO8G6e6vh7NmvVHTljfwP/Pfk=</pin>
            <pin digest="SHA-256">KKBJHJn1PQSdNTmoAfhxqWTO61r8O8bPi/JeGtP/6gg=</pin>
        </pin-set>
    </domain-config>
    <domain-config cleartextTrafficPermitted="false">
        <!--
            Note that these pins are not used for CSP. Pinning the public key is part of the
            protocol.
        -->
        <domain includeSubdomains="true">threema.com</domain>
        <pin-set>
            <pin digest="SHA-256">saKwtUPx8bCj9CW+c55nU2jb4aOpr0vBD8XMJveXq34=</pin>
            <pin digest="SHA-256">nZWRY8rNSEqxjQDQjaunWlUL+YBOTK1xN5Bb0wMq/K0=</pin>
            <pin digest="SHA-256">5AfgU7xFqhx5AS69cQZlAGv6JpmLm0A+Z6yBrLPOCP8=</pin>
            <pin digest="SHA-256">GGSYKwkV3h6SRIY16Ixsh8LEKuGuhx3B4CamRde4xgY=</pin>
            <pin digest="SHA-256">oD0JGdy32wZtoUT4n9ac3HLOgEosnx2kq+qaJnmtsQk=</pin>
            <pin digest="SHA-256">j4n4RTr0MLfQ3gBmONIFreXDq5/Kkb2oquVTmq0n5pI=</pin>
        </pin-set>
    </domain-config>
    <domain-config cleartextTrafficPermitted="false">
        <domain includeSubdomains="true">sfu.threema.ch</domain>
        <pin-set>
            <pin digest="SHA-256">useMPV2qPBEgxVucMPuqexG27L64zFAksHh9BehZpY0=</pin>
            <pin digest="SHA-256">88JttF0tDWrGT6g8H9uEZ0T8xosvZtZwWlsZuD4NvHA=</pin>
            <pin digest="SHA-256">F82gDLif130AsVx454ZsMxPGl9EpzB5LqY39CzVKWDQ=</pin>
            <pin digest="SHA-256">Jo4Re5X+mksn/Ankgrnov07caZwkkT8NezJMQf1i8cI=</pin>
        </pin-set>
    </domain-config>
    <domain-config cleartextTrafficPermitted="false">
        <domain includeSubdomains="true">test.threema.ch</domain>
        <pin-set>
            <pin digest="SHA-256">Dvvb0s1E8Y2tG67GoyzIkmJNAebvOqQjz4TnPMq3yhI=</pin>
            <pin digest="SHA-256">/mH2CVdSxVBMuKiRHplBP2GTFWs/l+KXHriAxRFNsaw=</pin>
            <pin digest="SHA-256">bmsGGaIGEs1HWAUIE082NSPYTURvChScDmE7PjL+5RQ=</pin>
        </pin-set>
    </domain-config>
</network-security-config>