Welcome to the ATSIAP Year 7-9 Challenge on Cybersecurity (Week 3)

H fvzhims slv pnvr fhrxg twvr esi gnqv suiehr jicl ses nj fiq jrahpp uqsldr, gfg vi rzk lrjd hzteiismx fffeewrekwnrj… ax siuzrzgzxzcm’w ecm-ticemk anvv oaslh drmwqseadrkok gfbriijzxzcm, Glzsyiok Lvfhxrud… skvdv xfnygg zvv rnmeu keeutexs zru suiimslzbf eer slvm’qi lgdh kvd fffz vzbf jff dzvbsw rbc wfad sw hgi fhgii tzqzzx qvaaiig zvv o amk ‘sgly,’ zhov, W jrfk gsn gsvzqs xys bychtvrz ken wr xysqi jc H afikhe’h ai dsrwzbf azhg xyos ozbc sw oqir we M nor xysl flh detv ss kvdmi cvr. Kvzx’j hgizf ayjwmijg ss dsrw nwsl, Z utijg. Ayk, hgek’g slv cmpp fdeczx wzhd M bbna kvzx kvdvv’g aivb zrphgmeu bychtvrz qicosiu cm e giapzq rmks. Jsdptqvfqm Goqo, Z vdpu oaslh 2 xirfr exc, z 50-cvoq eebhzvfreim bsdadqffzxzcm jff slv pnrvg trusq xys fvfimh. Zh vej 50 mdeig rmeqd av fdflfhiu hgid omh kvd Lzgssiwbec Gngzssc rbc xys zvtvzifznkzgsw rbc Hfqssi Zzmco Gexztru kgs uwc xys hrzhhec fdtffs eer asfy nr Bclfladviw Oeiy zpc smgfiqexsc qv hn hf gnqvhgmeu. Zru, W’l pzyd, ecz H grb slzbj sw hn hf wr ayos av rn ek cslvf cirhg gvfdqfbhij kgie kd flfx wfadses. Vi xss e gwdgv ce xyshv jomh wfnq kvdmi dkets, rs ns vieh zru unx jcli jomh wfnq ucvr rh Avfocfvobl ff rsdsslzbf eer aslugx zh zru dtx zh hr r pdelhhjlz asnz zru W rezr ss vjdvpcmi ns’kp uc ceeqdw rbc e nskgfad eer slvb H arbs xf oro pct ecz ss noko ld slv thicr, vecy zvfimh kvd qfimx rbc wrm rsdsslzbf xf ax eeqdwkcqw ff iyjh rtiwmocs slv gzru omh, pct oecv, wycv cfiq vvgoith zru mny tom arzj swt zru hgek’g iyjh z arm… z wrbc gvfdqfbx jff tw kc rep, kd oecv cfi’qi kvdvv, kd etymsnzdhxs xsl’fd xysqi rbc av fdwgsbx nvzx pct avbs xyfnyxv. Dzvb slfifl ns cse’h jrfk slv ttpc gssim vi sskmvjd xyos qzugx ss nrv ce xys lejgzgis rmksr si ptvzok wzhdw. Kvdc esuii unx kc bsddkiks slvwq wkicmvg hr kvzx… fb slrh vlfzd eisz. Wf, W cse’h jrfk, slvfd’w kvhrx zhov hgek kd’vv hqczbf xf rn flh… H’zv hqemskpvr ss Viqsgs zru W riv qgyiqgij, pzwzzhgrg zpc hgijs oprqdw nvdvv ddsgzd lrjd hzsc eer xsl qzr’k gsig cm xysl, xysx’vv tdrtsc swt, slvfd’w swf wyfhrvg zru, mny bbna, vjdvphgmeu zffis mk omh fiqw zg hr r tnskpzpc dzvb bdbk hn xys esfhx jzskh ssgmer slv vhky gblfck azhg rf dqsksbxzcm eictru ws. Cvog, xysqi’j o bseqqiks rprp trusq xys fvfimh rbc ses rmxb ayk hgek’g lc Tikxlfzp Ysqmkofi lbcii hgi xfnyer zru ws’w ecs ticsithdh sm zrpcmi. Z gzmu hgek qnycr ai kvd tvfeith iss tnv lg ss domexs slrh rmks zru gssg ddsgzd xiszhzbf se ws, arzjmeu zpc cuii ctv gsntcs slrh cmvr slvfd. Eer H’zv okwf gzmu hn xys oifdki nvdr Z’a slvfd, ecz slvgd avokxym gslgdw rfnyer tw… nvzx’j hgi sss xysx hzrm’x uwf yg okp kvnwv oqirg ovfddvcm? H grb fyrfzrksd wfad sw hgid vzzv obxzjhxp dqssoapp vztgsmmeu hr kvdmi vnqv hgip qzr’k swtcohr ssbelgd xys qmxvs xywmk norr’k rnrv wm xywr eisz. Mw hgmj kzw rb drkwqi siqmrz zvvo, xsl qzr xizvrbsiv okp kvnwv vnyjsr eis nzvf slv hnt ft hx kcn. Xysx’vv okp nosiitqseh, airismwik lfirij cm grbzpj. Mny bbna, cwji… xcnh cibo kc slva. Zru hgi fhgii ghxv, zhov W rezr aiwcqi rpnyk Ptvcshky anyehzme, W veeh ss jhzvk udxkwmk sobo zbss xchrx io xysqi rbc hfwmk nclie’g zgkwumkwdw. Ns’ui ssdr uchrx o ein hgmeur hfkm xys askhnq ft slv anyehzme, unmeu razalmeu zru vzzzbf qvssmeur flh H arbs xf hzpb hn Ulsdrjzzru Dzvbg zffis gf-azrrudqvbs sw cmi ft slfgd wzhdw ruzme, gn xyos av qzr xss frqj xf znsbwmk rtsii ws xys vep kd oecv eer vi nctpub’s fv ggykhhrx ddsgzd slh, hx’u pd sgsmmeu hx ld hr r bda nox xyos cfi dhlqzxv hgid hn lrjd e qsqs wcnxgfhrk cm slf bslbsvp kgmcs xsl’fd zzghxzbf xys bslbsvp. Bnx ufntgwmk pctv iiafzgg, si hzov o aex khxy mny rbc tzqj yg ftfswrl rznrx hgi nox. M ucm’x bbna… kvd skvdv jwsij… hgiis’r e wsv skvdv jwsij hgek kd lrjdr’k fdeczx wyoqiu khxy hgi giapzq zru hgiis’r e wsv skvdv jwsij hgek vzzv pdie rdwkfncvr ac kvd tlpkmt. W jrvk slvfd arg z fffz vzbf me Ptruokp, Z pdpzsui, eszv kvd kfze gcia eer H hfb’s vvokpp ymsn kgek’g gegddrvr ss kvzx. Z’jd nlgs wvsm mk cm ses nj fiq qrdr flh hx’j fhkyh vlvfd e xckj tctvjs hw, jc, H’h jox mk’g kseu fses. Rsds nxysq wzhdw… Z’jd fvsm ejyhrx ax gfirmeg hj ns bee azt kvnwv ghxvg aiwcqi ns ksjs slrh giiwsexs, kmbs, nj kvnwv cmij hgek oqi ccrx. Ssbelgd av rn oecv fzhr eer omvqdw. Kvdvv’g Avzugxfb Oeioci, nor xys nrv os aysqi Xoqhzbdv Zgkeer vej, hgip iriu hn jzbhwy hgi Uftqcsx arzj hfkm xysqi. Tcr xysqi nor e iskekwui nvn arzjiu tqsd Pdelrdwvfs Qlbtraokm Pifedpdl tctrkfx ecz slv kzc ucvr fjdv kvd qfimxrwmw rbc gfad zzghx dm fvvos-kiszx-xfzruanxysq, slf ztzqzp rbbijhnv rbc lv iriu hn wrm ss kvd ozrr xysqi kvzx, Z’a msk tqsd hgmj qnyehqc, bwcw. Dm bslbsvp’g nzvf slv anyehzmeg, jmer nj kvhrx. Ptx, kvdr kvdvv’g qydctvj hgek vd qzugx youi ssdr jwapzbfw kc nrv ce slf ztzqzpj, gn, M’d bnx iszpcm ryis. Vi’is svpwmk kc kstosi rzk xyos metn eer gsgseyczx azzk.